summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--AUTHORS1
-rw-r--r--COPYING676
-rw-r--r--ChangeLog15
-rw-r--r--INSTALL56
-rw-r--r--Makefile.in125
-rw-r--r--NEWS3
-rw-r--r--README17
-rwxr-xr-xconfigure214
-rw-r--r--doc/zcat.145
-rw-r--r--doc/zdiff.153
-rw-r--r--doc/zgrep.145
-rw-r--r--doc/zutils.infobin0 -> 6005 bytes
-rw-r--r--doc/zutils.texinfo236
-rwxr-xr-xtestsuite/check.sh110
-rw-r--r--zcat.in107
-rw-r--r--zcmp.in2
-rw-r--r--zdiff.in171
-rw-r--r--zgrep.in142
18 files changed, 2018 insertions, 0 deletions
diff --git a/AUTHORS b/AUTHORS
new file mode 100644
index 0000000..f36c5a2
--- /dev/null
+++ b/AUTHORS
@@ -0,0 +1 @@
+The zutils were written by Antonio Diaz Diaz.
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..4432540
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,676 @@
+
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+ Preamble
+
+ The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+ The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works. By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users. We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors. You can apply it to
+your programs, too.
+
+ When we speak of free software, we are referring to freedom, not
+price. Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+ To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights. Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+ For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received. You must make sure that they, too, receive
+or can get the source code. And you must show them these terms so they
+know their rights.
+
+ Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+ For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software. For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+ Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so. This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software. The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable. Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products. If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+ Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary. To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
+
+ The precise terms and conditions for copying, distribution and
+modification follow.
+
+ TERMS AND CONDITIONS
+
+ 0. Definitions.
+
+ "This License" refers to version 3 of the GNU General Public License.
+
+ "Copyright" also means copyright-like laws that apply to other kinds of
+works, such as semiconductor masks.
+
+ "The Program" refers to any copyrightable work licensed under this
+License. Each licensee is addressed as "you". "Licensees" and
+"recipients" may be individuals or organizations.
+
+ To "modify" a work means to copy from or adapt all or part of the work
+in a fashion requiring copyright permission, other than the making of an
+exact copy. The resulting work is called a "modified version" of the
+earlier work or a work "based on" the earlier work.
+
+ A "covered work" means either the unmodified Program or a work based
+on the Program.
+
+ To "propagate" a work means to do anything with it that, without
+permission, would make you directly or secondarily liable for
+infringement under applicable copyright law, except executing it on a
+computer or modifying a private copy. Propagation includes copying,
+distribution (with or without modification), making available to the
+public, and in some countries other activities as well.
+
+ To "convey" a work means any kind of propagation that enables other
+parties to make or receive copies. Mere interaction with a user through
+a computer network, with no transfer of a copy, is not conveying.
+
+ An interactive user interface displays "Appropriate Legal Notices"
+to the extent that it includes a convenient and prominently visible
+feature that (1) displays an appropriate copyright notice, and (2)
+tells the user that there is no warranty for the work (except to the
+extent that warranties are provided), that licensees may convey the
+work under this License, and how to view a copy of this License. If
+the interface presents a list of user commands or options, such as a
+menu, a prominent item in the list meets this criterion.
+
+ 1. Source Code.
+
+ The "source code" for a work means the preferred form of the work
+for making modifications to it. "Object code" means any non-source
+form of a work.
+
+ A "Standard Interface" means an interface that either is an official
+standard defined by a recognized standards body, or, in the case of
+interfaces specified for a particular programming language, one that
+is widely used among developers working in that language.
+
+ The "System Libraries" of an executable work include anything, other
+than the work as a whole, that (a) is included in the normal form of
+packaging a Major Component, but which is not part of that Major
+Component, and (b) serves only to enable use of the work with that
+Major Component, or to implement a Standard Interface for which an
+implementation is available to the public in source code form. A
+"Major Component", in this context, means a major essential component
+(kernel, window system, and so on) of the specific operating system
+(if any) on which the executable work runs, or a compiler used to
+produce the work, or an object code interpreter used to run it.
+
+ The "Corresponding Source" for a work in object code form means all
+the source code needed to generate, install, and (for an executable
+work) run the object code and to modify the work, including scripts to
+control those activities. However, it does not include the work's
+System Libraries, or general-purpose tools or generally available free
+programs which are used unmodified in performing those activities but
+which are not part of the work. For example, Corresponding Source
+includes interface definition files associated with source files for
+the work, and the source code for shared libraries and dynamically
+linked subprograms that the work is specifically designed to require,
+such as by intimate data communication or control flow between those
+subprograms and other parts of the work.
+
+ The Corresponding Source need not include anything that users
+can regenerate automatically from other parts of the Corresponding
+Source.
+
+ The Corresponding Source for a work in source code form is that
+same work.
+
+ 2. Basic Permissions.
+
+ All rights granted under this License are granted for the term of
+copyright on the Program, and are irrevocable provided the stated
+conditions are met. This License explicitly affirms your unlimited
+permission to run the unmodified Program. The output from running a
+covered work is covered by this License only if the output, given its
+content, constitutes a covered work. This License acknowledges your
+rights of fair use or other equivalent, as provided by copyright law.
+
+ You may make, run and propagate covered works that you do not
+convey, without conditions so long as your license otherwise remains
+in force. You may convey covered works to others for the sole purpose
+of having them make modifications exclusively for you, or provide you
+with facilities for running those works, provided that you comply with
+the terms of this License in conveying all material for which you do
+not control copyright. Those thus making or running the covered works
+for you must do so exclusively on your behalf, under your direction
+and control, on terms that prohibit them from making any copies of
+your copyrighted material outside their relationship with you.
+
+ Conveying under any other circumstances is permitted solely under
+the conditions stated below. Sublicensing is not allowed; section 10
+makes it unnecessary.
+
+ 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+
+ No covered work shall be deemed part of an effective technological
+measure under any applicable law fulfilling obligations under article
+11 of the WIPO copyright treaty adopted on 20 December 1996, or
+similar laws prohibiting or restricting circumvention of such
+measures.
+
+ When you convey a covered work, you waive any legal power to forbid
+circumvention of technological measures to the extent such circumvention
+is effected by exercising rights under this License with respect to
+the covered work, and you disclaim any intention to limit operation or
+modification of the work as a means of enforcing, against the work's
+users, your or third parties' legal rights to forbid circumvention of
+technological measures.
+
+ 4. Conveying Verbatim Copies.
+
+ You may convey verbatim copies of the Program's source code as you
+receive it, in any medium, provided that you conspicuously and
+appropriately publish on each copy an appropriate copyright notice;
+keep intact all notices stating that this License and any
+non-permissive terms added in accord with section 7 apply to the code;
+keep intact all notices of the absence of any warranty; and give all
+recipients a copy of this License along with the Program.
+
+ You may charge any price or no price for each copy that you convey,
+and you may offer support or warranty protection for a fee.
+
+ 5. Conveying Modified Source Versions.
+
+ You may convey a work based on the Program, or the modifications to
+produce it from the Program, in the form of source code under the
+terms of section 4, provided that you also meet all of these conditions:
+
+ a) The work must carry prominent notices stating that you modified
+ it, and giving a relevant date.
+
+ b) The work must carry prominent notices stating that it is
+ released under this License and any conditions added under section
+ 7. This requirement modifies the requirement in section 4 to
+ "keep intact all notices".
+
+ c) You must license the entire work, as a whole, under this
+ License to anyone who comes into possession of a copy. This
+ License will therefore apply, along with any applicable section 7
+ additional terms, to the whole of the work, and all its parts,
+ regardless of how they are packaged. This License gives no
+ permission to license the work in any other way, but it does not
+ invalidate such permission if you have separately received it.
+
+ d) If the work has interactive user interfaces, each must display
+ Appropriate Legal Notices; however, if the Program has interactive
+ interfaces that do not display Appropriate Legal Notices, your
+ work need not make them do so.
+
+ A compilation of a covered work with other separate and independent
+works, which are not by their nature extensions of the covered work,
+and which are not combined with it such as to form a larger program,
+in or on a volume of a storage or distribution medium, is called an
+"aggregate" if the compilation and its resulting copyright are not
+used to limit the access or legal rights of the compilation's users
+beyond what the individual works permit. Inclusion of a covered work
+in an aggregate does not cause this License to apply to the other
+parts of the aggregate.
+
+ 6. Conveying Non-Source Forms.
+
+ You may convey a covered work in object code form under the terms
+of sections 4 and 5, provided that you also convey the
+machine-readable Corresponding Source under the terms of this License,
+in one of these ways:
+
+ a) Convey the object code in, or embodied in, a physical product
+ (including a physical distribution medium), accompanied by the
+ Corresponding Source fixed on a durable physical medium
+ customarily used for software interchange.
+
+ b) Convey the object code in, or embodied in, a physical product
+ (including a physical distribution medium), accompanied by a
+ written offer, valid for at least three years and valid for as
+ long as you offer spare parts or customer support for that product
+ model, to give anyone who possesses the object code either (1) a
+ copy of the Corresponding Source for all the software in the
+ product that is covered by this License, on a durable physical
+ medium customarily used for software interchange, for a price no
+ more than your reasonable cost of physically performing this
+ conveying of source, or (2) access to copy the
+ Corresponding Source from a network server at no charge.
+
+ c) Convey individual copies of the object code with a copy of the
+ written offer to provide the Corresponding Source. This
+ alternative is allowed only occasionally and noncommercially, and
+ only if you received the object code with such an offer, in accord
+ with subsection 6b.
+
+ d) Convey the object code by offering access from a designated
+ place (gratis or for a charge), and offer equivalent access to the
+ Corresponding Source in the same way through the same place at no
+ further charge. You need not require recipients to copy the
+ Corresponding Source along with the object code. If the place to
+ copy the object code is a network server, the Corresponding Source
+ may be on a different server (operated by you or a third party)
+ that supports equivalent copying facilities, provided you maintain
+ clear directions next to the object code saying where to find the
+ Corresponding Source. Regardless of what server hosts the
+ Corresponding Source, you remain obligated to ensure that it is
+ available for as long as needed to satisfy these requirements.
+
+ e) Convey the object code using peer-to-peer transmission, provided
+ you inform other peers where the object code and Corresponding
+ Source of the work are being offered to the general public at no
+ charge under subsection 6d.
+
+ A separable portion of the object code, whose source code is excluded
+from the Corresponding Source as a System Library, need not be
+included in conveying the object code work.
+
+ A "User Product" is either (1) a "consumer product", which means any
+tangible personal property which is normally used for personal, family,
+or household purposes, or (2) anything designed or sold for incorporation
+into a dwelling. In determining whether a product is a consumer product,
+doubtful cases shall be resolved in favor of coverage. For a particular
+product received by a particular user, "normally used" refers to a
+typical or common use of that class of product, regardless of the status
+of the particular user or of the way in which the particular user
+actually uses, or expects or is expected to use, the product. A product
+is a consumer product regardless of whether the product has substantial
+commercial, industrial or non-consumer uses, unless such uses represent
+the only significant mode of use of the product.
+
+ "Installation Information" for a User Product means any methods,
+procedures, authorization keys, or other information required to install
+and execute modified versions of a covered work in that User Product from
+a modified version of its Corresponding Source. The information must
+suffice to ensure that the continued functioning of the modified object
+code is in no case prevented or interfered with solely because
+modification has been made.
+
+ If you convey an object code work under this section in, or with, or
+specifically for use in, a User Product, and the conveying occurs as
+part of a transaction in which the right of possession and use of the
+User Product is transferred to the recipient in perpetuity or for a
+fixed term (regardless of how the transaction is characterized), the
+Corresponding Source conveyed under this section must be accompanied
+by the Installation Information. But this requirement does not apply
+if neither you nor any third party retains the ability to install
+modified object code on the User Product (for example, the work has
+been installed in ROM).
+
+ The requirement to provide Installation Information does not include a
+requirement to continue to provide support service, warranty, or updates
+for a work that has been modified or installed by the recipient, or for
+the User Product in which it has been modified or installed. Access to a
+network may be denied when the modification itself materially and
+adversely affects the operation of the network or violates the rules and
+protocols for communication across the network.
+
+ Corresponding Source conveyed, and Installation Information provided,
+in accord with this section must be in a format that is publicly
+documented (and with an implementation available to the public in
+source code form), and must require no special password or key for
+unpacking, reading or copying.
+
+ 7. Additional Terms.
+
+ "Additional permissions" are terms that supplement the terms of this
+License by making exceptions from one or more of its conditions.
+Additional permissions that are applicable to the entire Program shall
+be treated as though they were included in this License, to the extent
+that they are valid under applicable law. If additional permissions
+apply only to part of the Program, that part may be used separately
+under those permissions, but the entire Program remains governed by
+this License without regard to the additional permissions.
+
+ When you convey a copy of a covered work, you may at your option
+remove any additional permissions from that copy, or from any part of
+it. (Additional permissions may be written to require their own
+removal in certain cases when you modify the work.) You may place
+additional permissions on material, added by you to a covered work,
+for which you have or can give appropriate copyright permission.
+
+ Notwithstanding any other provision of this License, for material you
+add to a covered work, you may (if authorized by the copyright holders of
+that material) supplement the terms of this License with terms:
+
+ a) Disclaiming warranty or limiting liability differently from the
+ terms of sections 15 and 16 of this License; or
+
+ b) Requiring preservation of specified reasonable legal notices or
+ author attributions in that material or in the Appropriate Legal
+ Notices displayed by works containing it; or
+
+ c) Prohibiting misrepresentation of the origin of that material, or
+ requiring that modified versions of such material be marked in
+ reasonable ways as different from the original version; or
+
+ d) Limiting the use for publicity purposes of names of licensors or
+ authors of the material; or
+
+ e) Declining to grant rights under trademark law for use of some
+ trade names, trademarks, or service marks; or
+
+ f) Requiring indemnification of licensors and authors of that
+ material by anyone who conveys the material (or modified versions of
+ it) with contractual assumptions of liability to the recipient, for
+ any liability that these contractual assumptions directly impose on
+ those licensors and authors.
+
+ All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10. If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term. If a license document contains
+a further restriction but permits relicensing or conveying under this
+License, you may add to a covered work material governed by the terms
+of that license document, provided that the further restriction does
+not survive such relicensing or conveying.
+
+ If you add terms to a covered work in accord with this section, you
+must place, in the relevant source files, a statement of the
+additional terms that apply to those files, or a notice indicating
+where to find the applicable terms.
+
+ Additional terms, permissive or non-permissive, may be stated in the
+form of a separately written license, or stated as exceptions;
+the above requirements apply either way.
+
+ 8. Termination.
+
+ You may not propagate or modify a covered work except as expressly
+provided under this License. Any attempt otherwise to propagate or
+modify it is void, and will automatically terminate your rights under
+this License (including any patent licenses granted under the third
+paragraph of section 11).
+
+ However, if you cease all violation of this License, then your
+license from a particular copyright holder is reinstated (a)
+provisionally, unless and until the copyright holder explicitly and
+finally terminates your license, and (b) permanently, if the copyright
+holder fails to notify you of the violation by some reasonable means
+prior to 60 days after the cessation.
+
+ Moreover, your license from a particular copyright holder is
+reinstated permanently if the copyright holder notifies you of the
+violation by some reasonable means, this is the first time you have
+received notice of violation of this License (for any work) from that
+copyright holder, and you cure the violation prior to 30 days after
+your receipt of the notice.
+
+ Termination of your rights under this section does not terminate the
+licenses of parties who have received copies or rights from you under
+this License. If your rights have been terminated and not permanently
+reinstated, you do not qualify to receive new licenses for the same
+material under section 10.
+
+ 9. Acceptance Not Required for Having Copies.
+
+ You are not required to accept this License in order to receive or
+run a copy of the Program. Ancillary propagation of a covered work
+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance. However,
+nothing other than this License grants you permission to propagate or
+modify any covered work. These actions infringe copyright if you do
+not accept this License. Therefore, by modifying or propagating a
+covered work, you indicate your acceptance of this License to do so.
+
+ 10. Automatic Licensing of Downstream Recipients.
+
+ Each time you convey a covered work, the recipient automatically
+receives a license from the original licensors, to run, modify and
+propagate that work, subject to this License. You are not responsible
+for enforcing compliance by third parties with this License.
+
+ An "entity transaction" is a transaction transferring control of an
+organization, or substantially all assets of one, or subdividing an
+organization, or merging organizations. If propagation of a covered
+work results from an entity transaction, each party to that
+transaction who receives a copy of the work also receives whatever
+licenses to the work the party's predecessor in interest had or could
+give under the previous paragraph, plus a right to possession of the
+Corresponding Source of the work from the predecessor in interest, if
+the predecessor has it or can get it with reasonable efforts.
+
+ You may not impose any further restrictions on the exercise of the
+rights granted or affirmed under this License. For example, you may
+not impose a license fee, royalty, or other charge for exercise of
+rights granted under this License, and you may not initiate litigation
+(including a cross-claim or counterclaim in a lawsuit) alleging that
+any patent claim is infringed by making, using, selling, offering for
+sale, or importing the Program or any portion of it.
+
+ 11. Patents.
+
+ A "contributor" is a copyright holder who authorizes use under this
+License of the Program or a work on which the Program is based. The
+work thus licensed is called the contributor's "contributor version".
+
+ A contributor's "essential patent claims" are all patent claims
+owned or controlled by the contributor, whether already acquired or
+hereafter acquired, that would be infringed by some manner, permitted
+by this License, of making, using, or selling its contributor version,
+but do not include claims that would be infringed only as a
+consequence of further modification of the contributor version. For
+purposes of this definition, "control" includes the right to grant
+patent sublicenses in a manner consistent with the requirements of
+this License.
+
+ Each contributor grants you a non-exclusive, worldwide, royalty-free
+patent license under the contributor's essential patent claims, to
+make, use, sell, offer for sale, import and otherwise run, modify and
+propagate the contents of its contributor version.
+
+ In the following three paragraphs, a "patent license" is any express
+agreement or commitment, however denominated, not to enforce a patent
+(such as an express permission to practice a patent or covenant not to
+sue for patent infringement). To "grant" such a patent license to a
+party means to make such an agreement or commitment not to enforce a
+patent against the party.
+
+ If you convey a covered work, knowingly relying on a patent license,
+and the Corresponding Source of the work is not available for anyone
+to copy, free of charge and under the terms of this License, through a
+publicly available network server or other readily accessible means,
+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients. "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+ If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+ A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License. You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
+patent license (a) in connection with copies of the covered work
+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+ Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+ 12. No Surrender of Others' Freedom.
+
+ If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License. If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all. For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+ 13. Use with the GNU Affero General Public License.
+
+ Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work. The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+ 14. Revised Versions of this License.
+
+ The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time. Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+ Each version is given a distinguishing version number. If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation. If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+ If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+ Later license versions may give you additional or different
+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+ 15. Disclaimer of Warranty.
+
+ THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+ 16. Limitation of Liability.
+
+ IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+ 17. Interpretation of Sections 15 and 16.
+
+ If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+ END OF TERMS AND CONDITIONS
+
+ How to Apply These Terms to Your New Programs
+
+ If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+ To do so, attach the following notices to the program. It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+ <one line to give the program's name and a brief idea of what it does.>
+ Copyright (C) <year> <name of author>
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+ <program> Copyright (C) <year> <name of author>
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+
diff --git a/ChangeLog b/ChangeLog
new file mode 100644
index 0000000..af22713
--- /dev/null
+++ b/ChangeLog
@@ -0,0 +1,15 @@
+2009-08-13 Antonio Diaz Diaz <ant_diaz@teleline.es>
+
+ * Version 0.2 released.
+ * Added support for xz.
+
+2009-08-07 Antonio Diaz Diaz <ant_diaz@teleline.es>
+
+ * Version 0.1 released.
+
+
+Copyright (C) 2009 Antonio Diaz Diaz.
+
+This file is a collection of facts, and thus it is not copyrightable,
+but just in case, I give you unlimited permission to copy, distribute
+and modify it.
diff --git a/INSTALL b/INSTALL
new file mode 100644
index 0000000..2368267
--- /dev/null
+++ b/INSTALL
@@ -0,0 +1,56 @@
+Requirements
+------------
+You will need a Posix compatible shell command interpreter like Bash or
+Dash.
+Bash is available at http://gnu.org/software/bash/bash.html.
+Dash is available at http://packages.debian.org/stable/dash/.
+
+
+Procedure
+---------
+1. Unpack the archive if you have not done so already:
+
+ lzip -cd zutils[version].tar.lz | tar -xf -
+or
+ gzip -cd zutils[version].tar.gz | tar -xf -
+
+This creates the directory ./zutils[version] containing the source from
+the main archive.
+
+2. Change to zutils directory and run configure.
+ (Try `configure --help' for usage instructions).
+
+ cd zutils[version]
+ ./configure
+
+3. Run make.
+
+ make
+
+4. Optionally, type `make check' to run the tests that come with zutils.
+
+5. Type `make install' to install the programs and any data files and
+ documentation.
+
+
+Another way
+-----------
+You can also compile zutils into a separate directory. To do this, you
+must use a version of `make' that supports the `VPATH' variable, such
+as GNU `make'. `cd' to the directory where you want the object files
+and executables to go and run the `configure' script. `configure'
+automatically checks for the source code in `.', in `..' and in the
+directory that `configure' is in.
+
+`configure' recognizes the option `--srcdir=DIR' to control where to
+look for the sources. Usually `configure' can determine that directory
+automatically.
+
+After running `configure', you can run `make' and `make install' as
+explained above.
+
+
+Copyright (C) 2009 Antonio Diaz Diaz.
+
+This file is free documentation: you have unlimited permission to copy,
+distribute and modify it.
diff --git a/Makefile.in b/Makefile.in
new file mode 100644
index 0000000..c93cf1a
--- /dev/null
+++ b/Makefile.in
@@ -0,0 +1,125 @@
+
+DISTNAME = $(pkgname)-$(pkgversion)
+INSTALL = install
+INSTALL_PROGRAM = $(INSTALL) -p -m 755
+INSTALL_SCRIPT = $(INSTALL) -p -m 755
+INSTALL_DATA = $(INSTALL) -p -m 644
+INSTALL_DIR = $(INSTALL) -d -m 755
+SHELL = /bin/sh
+
+scripts = zcat zcmp zdiff zgrep
+
+
+.PHONY : all install install-info install-man install-strip \
+ uninstall uninstall-info uninstall-man \
+ doc info man check dist clean distclean
+
+all : $(scripts)
+
+zcat : zcat.in
+ sed -e 's|VERSION|$(pkgversion)|g' $(VPATH)/zcat.in > zcat
+ chmod a+x zcat
+
+zcmp : zcmp.in
+ cat $(VPATH)/zcmp.in > zcmp
+ chmod a+x zcmp
+
+zdiff : zdiff.in
+ sed -e 's|VERSION|$(pkgversion)|g' $(VPATH)/zdiff.in > zdiff
+ chmod a+x zdiff
+
+zgrep : zgrep.in
+ sed -e 's|VERSION|$(pkgversion)|g' $(VPATH)/zgrep.in > zgrep
+ chmod a+x zgrep
+
+$(scripts) : Makefile
+
+doc : info man
+
+info : $(VPATH)/doc/$(pkgname).info
+
+$(VPATH)/doc/$(pkgname).info : $(VPATH)/doc/$(pkgname).texinfo
+ cd $(VPATH)/doc && makeinfo $(pkgname).texinfo
+
+man : $(VPATH)/doc/zcat.1 $(VPATH)/doc/zdiff.1 $(VPATH)/doc/zgrep.1
+
+$(VPATH)/doc/zcat.1 : zcat
+ help2man -o $(VPATH)/doc/zcat.1 --no-info ./zcat
+
+$(VPATH)/doc/zdiff.1 : zdiff
+ help2man -o $(VPATH)/doc/zdiff.1 --no-info ./zdiff
+
+$(VPATH)/doc/zgrep.1 : zgrep
+ help2man -o $(VPATH)/doc/zgrep.1 --no-info ./zgrep
+
+Makefile : $(VPATH)/configure $(VPATH)/Makefile.in
+ ./config.status
+
+check : all $(VPATH)/testsuite/check.sh
+ @$(VPATH)/testsuite/check.sh $(VPATH)/testsuite
+
+install : all install-info install-man
+ if test ! -d $(DESTDIR)$(bindir) ; then $(INSTALL_DIR) $(DESTDIR)$(bindir) ; fi
+ $(INSTALL_SCRIPT) zcat $(DESTDIR)$(bindir)/zcat
+ $(INSTALL_SCRIPT) zcmp $(DESTDIR)$(bindir)/zcmp
+ $(INSTALL_SCRIPT) zdiff $(DESTDIR)$(bindir)/zdiff
+ $(INSTALL_SCRIPT) zgrep $(DESTDIR)$(bindir)/zgrep
+
+install-info :
+ if test ! -d $(DESTDIR)$(infodir) ; then $(INSTALL_DIR) $(DESTDIR)$(infodir) ; fi
+ $(INSTALL_DATA) $(VPATH)/doc/$(pkgname).info $(DESTDIR)$(infodir)/$(pkgname).info
+ -install-info --info-dir=$(DESTDIR)$(infodir) $(DESTDIR)$(infodir)/$(pkgname).info
+
+install-man :
+ if test ! -d $(DESTDIR)$(mandir)/man1 ; then $(INSTALL_DIR) $(DESTDIR)$(mandir)/man1 ; fi
+ $(INSTALL_DATA) $(VPATH)/doc/zcat.1 $(DESTDIR)$(mandir)/man1/zcat.1
+ -rm -f $(DESTDIR)$(mandir)/man1/zcmp.1
+ cd $(DESTDIR)$(mandir)/man1 && ln -s zdiff.1 zcmp.1
+ $(INSTALL_DATA) $(VPATH)/doc/zdiff.1 $(DESTDIR)$(mandir)/man1/zdiff.1
+ $(INSTALL_DATA) $(VPATH)/doc/zgrep.1 $(DESTDIR)$(mandir)/man1/zgrep.1
+
+uninstall : uninstall-info uninstall-man
+ -rm -f $(DESTDIR)$(bindir)/zcat
+ -rm -f $(DESTDIR)$(bindir)/zcmp
+ -rm -f $(DESTDIR)$(bindir)/zdiff
+ -rm -f $(DESTDIR)$(bindir)/zgrep
+
+uninstall-info :
+ -install-info --info-dir=$(DESTDIR)$(infodir) --remove $(DESTDIR)$(infodir)/$(pkgname).info
+ -rm -f $(DESTDIR)$(infodir)/$(pkgname).info
+
+uninstall-man :
+ -rm -f $(DESTDIR)$(mandir)/man1/zcat.1
+ -rm -f $(DESTDIR)$(mandir)/man1/zcmp.1
+ -rm -f $(DESTDIR)$(mandir)/man1/zdiff.1
+ -rm -f $(DESTDIR)$(mandir)/man1/zgrep.1
+
+dist :
+ ln -sf $(VPATH) $(DISTNAME)
+ tar -cvf $(DISTNAME).tar \
+ $(DISTNAME)/AUTHORS \
+ $(DISTNAME)/COPYING \
+ $(DISTNAME)/ChangeLog \
+ $(DISTNAME)/INSTALL \
+ $(DISTNAME)/Makefile.in \
+ $(DISTNAME)/NEWS \
+ $(DISTNAME)/README \
+ $(DISTNAME)/configure \
+ $(DISTNAME)/doc/zcat.1 \
+ $(DISTNAME)/doc/zdiff.1 \
+ $(DISTNAME)/doc/zgrep.1 \
+ $(DISTNAME)/doc/$(pkgname).info \
+ $(DISTNAME)/doc/$(pkgname).texinfo \
+ $(DISTNAME)/testsuite/check.sh \
+ $(DISTNAME)/zcat.in \
+ $(DISTNAME)/zcmp.in \
+ $(DISTNAME)/zdiff.in \
+ $(DISTNAME)/zgrep.in
+ rm -f $(DISTNAME)
+ lzip -v -9 $(DISTNAME).tar
+
+clean :
+ -rm -f $(scripts)
+
+distclean : clean
+ -rm -f Makefile config.status *.tar *.tar.lz
diff --git a/NEWS b/NEWS
new file mode 100644
index 0000000..6138a27
--- /dev/null
+++ b/NEWS
@@ -0,0 +1,3 @@
+Changes in version 0.2:
+
+Support for the xz compressor has been added.
diff --git a/README b/README
new file mode 100644
index 0000000..b78086d
--- /dev/null
+++ b/README
@@ -0,0 +1,17 @@
+Description
+
+Zutils is a collection of utilities for dealing with any combination of
+compressed and non-compressed files transparently. The supported
+compressors are gzip, bzip2, lzip and xz.
+
+The currently provided utilities are zcat, zcmp, zdiff and zgrep.
+
+
+Copyright (C) 2009 Antonio Diaz Diaz.
+
+This file is free documentation: you have unlimited permission to copy,
+distribute and modify it.
+
+The file Makefile.in is a data file used by configure to produce the
+Makefile. It has the same copyright owner and permissions that this
+file.
diff --git a/configure b/configure
new file mode 100755
index 0000000..e5cf103
--- /dev/null
+++ b/configure
@@ -0,0 +1,214 @@
+#! /bin/sh
+# configure script for Zutils - Utilities dealing with compressed files
+# Copyright (C) 2009 Antonio Diaz Diaz.
+#
+# This configure script is free software: you have unlimited permission
+# to copy, distribute and modify it.
+#
+# Date of this version: 2009-08-13
+
+invocation_name=$0
+args=
+no_create=
+pkgname=zutils
+pkgversion=0.2
+srctrigger=zdiff.in
+
+# clear some things potentially inherited from environment.
+LC_ALL=C
+export LC_ALL
+srcdir=
+prefix=/usr/local
+exec_prefix='$(prefix)'
+bindir='$(exec_prefix)/bin'
+datadir='$(prefix)/share'
+infodir='$(datadir)/info'
+mandir='$(datadir)/man'
+sysconfdir='$(prefix)/etc'
+CC=
+CXX=
+CPPFLAGS=
+CFLAGS='-Wall -W -O2'
+CXXFLAGS='-Wall -W -O2'
+LDFLAGS=
+
+# Loop over all args
+while [ x"$1" != x ] ; do
+
+ # Get the first arg, and shuffle
+ option=$1
+ shift
+
+ # Add the argument quoted to args
+ args="${args} \"${option}\""
+
+ # Split out the argument for options that take them
+ case ${option} in
+ *=*) optarg=`echo ${option} | sed -e 's,^[^=]*=,,'` ;;
+ esac
+
+ # Process the options
+ case ${option} in
+ --help | --he* | -h)
+ echo "Usage: configure [options]"
+ echo
+ echo "Options: [defaults in brackets]"
+ echo " -h, --help display this help and exit"
+ echo " -V, --version output version information and exit"
+ echo " --srcdir=DIR find the sources in DIR [. or ..]"
+ echo " --prefix=DIR install into DIR [${prefix}]"
+ echo " --exec-prefix=DIR base directory for arch-dependent files [${exec_prefix}]"
+ echo " --bindir=DIR user executables directory [${bindir}]"
+ echo " --datadir=DIR base directory for doc and data [${datadir}]"
+ echo " --infodir=DIR info files directory [${infodir}]"
+ echo " --mandir=DIR man pages directory [${mandir}]"
+ echo " --sysconfdir=DIR read-only single-machine data directory [${sysconfdir}]"
+ echo " CC=COMPILER C compiler to use [gcc]"
+ echo " CXX=COMPILER C++ compiler to use [g++]"
+ echo " CPPFLAGS=OPTIONS command line options for the preprocessor [${CPPFLAGS}]"
+ echo " CFLAGS=OPTIONS command line options for the C compiler [${CFLAGS}]"
+ echo " CXXFLAGS=OPTIONS command line options for the C++ compiler [${CXXFLAGS}]"
+ echo " LDFLAGS=OPTIONS command line options for the linker [${LDFLAGS}]"
+ echo
+ exit 0 ;;
+ --version | --ve* | -V)
+ echo "Configure script for ${pkgname} version ${pkgversion}"
+ exit 0 ;;
+ --srcdir* | --sr*)
+ srcdir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --prefix* | --pr*)
+ prefix=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --exec-prefix* | --ex*)
+ exec_prefix=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --bindir* | --bi*)
+ bindir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --datadir* | --da*)
+ datadir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --infodir* | --in*)
+ infodir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --mandir* | --ma*)
+ mandir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --sysconfdir* | --sy*)
+ sysconfdir=`echo ${optarg} | sed -e 's,/$,,'` ;;
+ --no-create | --no-c*)
+ no_create=yes ;;
+
+ CC=*) CC=${optarg} ;;
+ CXX=*) CXX=${optarg} ;;
+ CPPFLAGS=*) CPPFLAGS=${optarg} ;;
+ CFLAGS=*) CFLAGS=${optarg} ;;
+ CXXFLAGS=*) CXXFLAGS=${optarg} ;;
+ LDFLAGS=*) LDFLAGS=${optarg} ;;
+
+ --* | *=* | *-*-*) ;;
+ *)
+ echo "configure: Unrecognized option: \"${option}\"; use --help for usage." 1>&2
+ exit 1 ;;
+ esac
+done
+
+# Find the source files, if location was not specified.
+srcdirtext=
+if [ x"${srcdir}" = x ] ; then
+ srcdirtext="or . or .." ; srcdir=.
+ if [ ! -r ${srcdir}/${srctrigger} ] ; then srcdir=.. ; fi
+ if [ ! -r ${srcdir}/${srctrigger} ] ; then
+ ## the sed command below emulates the dirname command
+ srcdir=`echo ${invocation_name} | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
+ fi
+fi
+
+if [ ! -r ${srcdir}/${srctrigger} ] ; then
+ exec 1>&2
+ echo
+ echo "configure: Can't find sources in ${srcdir} ${srcdirtext}"
+ echo "configure: (At least ${srctrigger} is missing)."
+ exit 1
+fi
+
+# Set srcdir to . if that's what it is.
+if [ "`pwd`" = "`cd ${srcdir} ; pwd`" ] ; then srcdir=. ; fi
+
+# checking whether we are using GNU C.
+if [ x"${CC}" = x ] ; then # Let the user override the test.
+ if [ -x /bin/gcc ] ||
+ [ -x /usr/bin/gcc ] ||
+ [ -x /usr/local/bin/gcc ] ; then
+ CC="gcc"
+ else
+ CC="cc"
+ fi
+fi
+
+# checking whether we are using GNU C++.
+if [ x"${CXX}" = x ] ; then # Let the user override the test.
+ if [ -x /bin/g++ ] ||
+ [ -x /usr/bin/g++ ] ||
+ [ -x /usr/local/bin/g++ ] ; then
+ CXX="g++"
+ else
+ CXX="c++"
+ fi
+fi
+
+echo
+if [ x${no_create} = x ] ; then
+ echo "creating config.status"
+ rm -f config.status
+ cat > config.status << EOF
+#! /bin/sh
+# This file was generated automatically by configure. Do not edit.
+# Run this file to recreate the current configuration.
+#
+# This script is free software: you have unlimited permission
+# to copy, distribute and modify it.
+
+exec /bin/sh ${invocation_name} ${args} --no-create
+EOF
+ chmod +x config.status
+fi
+
+echo "creating Makefile"
+echo "VPATH = ${srcdir}"
+echo "prefix = ${prefix}"
+echo "exec_prefix = ${exec_prefix}"
+echo "bindir = ${bindir}"
+echo "datadir = ${datadir}"
+echo "infodir = ${infodir}"
+echo "mandir = ${mandir}"
+echo "sysconfdir = ${sysconfdir}"
+echo "CC = ${CC}"
+echo "CXX = ${CXX}"
+echo "CPPFLAGS = ${CPPFLAGS}"
+echo "CFLAGS = ${CFLAGS}"
+echo "CXXFLAGS = ${CXXFLAGS}"
+echo "LDFLAGS = ${LDFLAGS}"
+rm -f Makefile
+cat > Makefile << EOF
+# Makefile for Zutils - Utilities dealing with compressed files
+# Copyright (C) 2009 Antonio Diaz Diaz.
+# This file was generated automatically by configure. Do not edit.
+#
+# This Makefile is free software: you have unlimited permission
+# to copy, distribute and modify it.
+
+pkgname = ${pkgname}
+pkgversion = ${pkgversion}
+VPATH = ${srcdir}
+prefix = ${prefix}
+exec_prefix = ${exec_prefix}
+bindir = ${bindir}
+datadir = ${datadir}
+infodir = ${infodir}
+mandir = ${mandir}
+sysconfdir = ${sysconfdir}
+CC = ${CC}
+CXX = ${CXX}
+CPPFLAGS = ${CPPFLAGS}
+CFLAGS = ${CFLAGS}
+CXXFLAGS = ${CXXFLAGS}
+LDFLAGS = ${LDFLAGS}
+EOF
+cat ${srcdir}/Makefile.in >> Makefile
+
+echo "OK. Now you can run make."
diff --git a/doc/zcat.1 b/doc/zcat.1
new file mode 100644
index 0000000..cd432f0
--- /dev/null
+++ b/doc/zcat.1
@@ -0,0 +1,45 @@
+.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.36.
+.TH ZCAT "1" "August 2009" "Zcat 0.2" "User Commands"
+.SH NAME
+Zcat \- manual page for Zcat 0.2
+.SH SYNOPSIS
+.B zcat
+[\fIOPTIONS\fR] [\fICAT_OPTIONS\fR] [\fIFILES\fR]
+.SH DESCRIPTION
+Zcat \- Cat wrapper for compressed files.
+.PP
+Zcat is a wrapper script around the cat command that allows
+transparent concatenation of any combination of compressed and
+non\-compressed files. If any given file is compressed, its uncompressed
+content is used. If a given file does not exist, zcat tries the
+compressed file name corresponding to the default compressor selected.
+The supported compressors are gzip, bzip2, lzip and xz.
+.PP
+CAT_OPTIONS are passed directly to cat.
+The exit status from cat is preserved.
+.SH OPTIONS
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+display this help and exit
+.TP
+\fB\-V\fR, \fB\-\-version\fR
+output version information and exit
+.TP
+\fB\-\-gzip\fR
+use gzip as default decompressor
+.TP
+\fB\-\-bzip2\fR
+use bzip2 as default decompressor
+.TP
+\fB\-\-lzip\fR
+use lzip as default decompressor (default)
+.TP
+\fB\-\-xz\fR
+use xz as default decompressor
+.SH "REPORTING BUGS"
+Report bugs to lzip\-bug@nongnu.org
+Lzip home page: http://www.nongnu.org/lzip/lzip.html
+.SH COPYRIGHT
+Copyright \(co 2009 Antonio Diaz Diaz.
+This script is free software: you have unlimited permission
+to copy, distribute and modify it.
diff --git a/doc/zdiff.1 b/doc/zdiff.1
new file mode 100644
index 0000000..b28acfc
--- /dev/null
+++ b/doc/zdiff.1
@@ -0,0 +1,53 @@
+.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.36.
+.TH ZDIFF "1" "August 2009" "Zdiff 0.2" "User Commands"
+.SH NAME
+Zdiff \- manual page for Zdiff 0.2
+.SH SYNOPSIS
+.B zdiff
+[\fIOPTIONS\fR] [\fIDIFF_OPTIONS\fR] \fIFILE1 \fR[\fIFILE2\fR]
+.SH DESCRIPTION
+Zdiff \- Diff/cmp wrapper for compressed files.
+.PP
+Zdiff is a wrapper script around the diff and cmp commands that allows
+transparent comparison of any combination of compressed and
+non\-compressed files. If any given file is compressed, its uncompressed
+content is used. The supported compressors are gzip, bzip2, lzip and xz.
+.PP
+Zcmp is a shortcut for "zdiff \fB\-\-cmp\fR"
+.PP
+Compares FILE1 to FILE2. If FILE2 is omitted, compares FILE1 to the
+uncompressed contents of FILE1.[gz|bz2|lz] (depending on the default
+compressor selected). DIFF_OPTIONS are passed directly to diff or cmp.
+The exit status from diff or cmp is preserved.
+.SH OPTIONS
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+display this help and exit
+.TP
+\fB\-V\fR, \fB\-\-version\fR
+output version information and exit
+.TP
+\fB\-\-gzip\fR
+use gzip as default decompressor
+.TP
+\fB\-\-bzip2\fR
+use bzip2 as default decompressor
+.TP
+\fB\-\-lzip\fR
+use lzip as default decompressor (default)
+.TP
+\fB\-\-xz\fR
+use xz as default decompressor
+.TP
+\fB\-\-diff\fR
+use diff to compare files (default)
+.TP
+\fB\-\-cmp\fR
+use cmp to compare files
+.SH "REPORTING BUGS"
+Report bugs to lzip\-bug@nongnu.org
+Lzip home page: http://www.nongnu.org/lzip/lzip.html
+.SH COPYRIGHT
+Copyright \(co 2009 Antonio Diaz Diaz.
+This script is free software: you have unlimited permission
+to copy, distribute and modify it.
diff --git a/doc/zgrep.1 b/doc/zgrep.1
new file mode 100644
index 0000000..8913a96
--- /dev/null
+++ b/doc/zgrep.1
@@ -0,0 +1,45 @@
+.\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.36.
+.TH ZGREP "1" "August 2009" "Zgrep 0.2" "User Commands"
+.SH NAME
+Zgrep \- manual page for Zgrep 0.2
+.SH SYNOPSIS
+.B zgrep
+[\fIOPTIONS\fR] [\fIGREP_OPTIONS\fR] \fIPATTERN \fR[\fIFILES\fR]
+.SH DESCRIPTION
+Zgrep \- Grep wrapper for compressed files.
+.PP
+Zgrep is a wrapper script around the grep command that allows
+transparent search on any combination of compressed and non\-compressed
+files. If any given file is compressed, its uncompressed content is
+used. If a given file does not exist, zgrep tries the compressed file
+name corresponding to the default compressor selected. The supported
+compressors are gzip, bzip2, lzip and xz.
+.PP
+GREP_OPTIONS are passed directly to grep.
+The exit status from grep is preserved.
+.SH OPTIONS
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+display this help and exit
+.TP
+\fB\-V\fR, \fB\-\-version\fR
+output version information and exit
+.TP
+\fB\-\-gzip\fR
+use gzip as default decompressor
+.TP
+\fB\-\-bzip2\fR
+use bzip2 as default decompressor
+.TP
+\fB\-\-lzip\fR
+use lzip as default decompressor (default)
+.TP
+\fB\-\-xz\fR
+use xz as default decompressor
+.SH "REPORTING BUGS"
+Report bugs to lzip\-bug@nongnu.org
+Lzip home page: http://www.nongnu.org/lzip/lzip.html
+.SH COPYRIGHT
+Copyright \(co 2009 Antonio Diaz Diaz.
+This script is free software: you have unlimited permission
+to copy, distribute and modify it.
diff --git a/doc/zutils.info b/doc/zutils.info
new file mode 100644
index 0000000..1229e3b
--- /dev/null
+++ b/doc/zutils.info
Binary files differ
diff --git a/doc/zutils.texinfo b/doc/zutils.texinfo
new file mode 100644
index 0000000..6367629
--- /dev/null
+++ b/doc/zutils.texinfo
@@ -0,0 +1,236 @@
+\input texinfo @c -*-texinfo-*-
+@c %**start of header
+@setfilename zutils.info
+@settitle Zutils
+@finalout
+@c %**end of header
+
+@set UPDATED 13 August 2009
+@set VERSION 0.2
+
+@dircategory Data Compression
+@direntry
+* Zutils: (zutils). Utilities dealing with compressed files
+@end direntry
+
+
+@titlepage
+@title Zutils
+@subtitle Utilities dealing with compressed files
+@subtitle for Zutils version @value{VERSION}, @value{UPDATED}
+@author by Antonio Diaz Diaz
+
+@page
+@vskip 0pt plus 1filll
+@end titlepage
+
+@contents
+
+@node Top
+@top
+
+This manual is for Zutils (version @value{VERSION}, @value{UPDATED}).
+
+@menu
+* Introduction:: Purpose and features of zutils
+* Zcat:: Concatenating compressed files
+* Zcmp/Zdiff:: Comparing compressed files
+* Zgrep:: Searching inside compressed files
+* Problems:: Reporting bugs
+* Concept Index:: Index of concepts
+@end menu
+
+@sp 1
+Copyright @copyright{} 2008, 2009 Antonio Diaz Diaz.
+
+This manual is free documentation: you have unlimited permission
+to copy, distribute and modify it.
+
+
+@node Introduction
+@chapter Introduction
+@cindex introduction
+
+Zutils is a collection of utilities for dealing with any combination of
+compressed and non-compressed files transparently. The supported
+compressors are gzip, bzip2, lzip and xz.
+
+The currently provided utilities are zcat, zcmp, zdiff and zgrep.
+
+
+@node Zcat
+@chapter Zcat
+@cindex zcat
+
+Zcat is a wrapper script around the cat command that allows transparent
+concatenation of any combination of compressed and non-compressed files.
+If any given file is compressed, its uncompressed content is used. If a
+given file does not exist, zcat tries the compressed file name
+corresponding to the default compressor selected. The supported
+compressors are gzip, bzip2, lzip and xz.
+
+The format for running zcat is:
+
+@example
+zcat [@var{options}] [@var{cat_options}] [@var{files}]
+@end example
+
+@noindent
+@var{cat_options} are passed directly to cat. The exit status from cat
+is preserved.
+
+Zcat supports the following options:
+
+@table @samp
+@item --help
+@itemx -h
+Print an informative help message describing the options and exit.
+
+@item --version
+@itemx -V
+Print the version number of zcat on the standard output and exit.
+
+@item --gzip
+Use gzip as default decompressor.
+
+@item --bzip2
+Use bzip2 as default decompressor.
+
+@item --lzip
+Use lzip as default decompressor (default).
+
+@item --xz
+Use xz as default decompressor.
+
+@end table
+
+
+@node Zcmp/Zdiff
+@chapter Zcmp/Zdiff
+@cindex zcmp
+@cindex zdiff
+
+Zdiff is a wrapper script around the diff and cmp commands that allows
+transparent comparison of any combination of compressed and
+non-compressed files. If any given file is compressed, its uncompressed
+content is used. The supported compressors are gzip, bzip2, lzip and xz.
+
+@noindent
+Zcmp is a shortcut for @samp{zdiff --cmp}
+
+The format for running zdiff is:
+
+@example
+zdiff [@var{options}] [@var{diff_options}] @var{file1} [@var{file2}]
+@end example
+
+@noindent
+Compares @var{file1} to @var{file2}. If @var{file2} is omitted, compares
+@var{file1} to the uncompressed contents of @var{file1}.[gz|bz2|lz]
+(depending on the default compressor selected). @var{diff_options} are
+passed directly to diff or cmp. The exit status from diff or cmp is
+preserved.
+
+Zdiff supports the following options:
+
+@table @samp
+@item --help
+@itemx -h
+Print an informative help message describing the options and exit.
+
+@item --version
+@itemx -V
+Print the version number of zdiff on the standard output and exit.
+
+@item --gzip
+Use gzip as default decompressor.
+
+@item --bzip2
+Use bzip2 as default decompressor.
+
+@item --lzip
+Use lzip as default decompressor (default).
+
+@item --xz
+Use xz as default decompressor.
+
+@item --diff
+Use diff to compare files (default).
+
+@item --cmp
+Use cmp to compare files.
+
+@end table
+
+Zdiff has the limitation that messages from the diff or cmp programs
+refer to temporary filenames instead of those specified.
+
+
+@node Zgrep
+@chapter Zgrep
+@cindex zgrep
+
+Zgrep is a wrapper script around the grep command that allows
+transparent search on any combination of compressed and non-compressed
+files. If any given file is compressed, its uncompressed content is
+used. If a given file does not exist, zgrep tries the compressed file
+name corresponding to the default compressor selected. The supported
+compressors are gzip, bzip2, lzip and xz.
+
+The format for running zgrep is:
+
+@example
+zgrep [@var{options}] [@var{grep_options}] @var{pattern} [@var{files}]
+@end example
+
+@noindent
+@var{grep_options} are passed directly to grep. The exit status from
+grep is preserved.
+
+Zgrep supports the following options:
+
+@table @samp
+@item --help
+@itemx -h
+Print an informative help message describing the options and exit.
+
+@item --version
+@itemx -V
+Print the version number of zgrep on the standard output and exit.
+
+@item --gzip
+Use gzip as default decompressor.
+
+@item --bzip2
+Use bzip2 as default decompressor.
+
+@item --lzip
+Use lzip as default decompressor (default).
+
+@item --xz
+Use xz as default decompressor.
+
+@end table
+
+
+@node Problems
+@chapter Reporting Bugs
+@cindex bugs
+@cindex getting help
+
+There are probably bugs in zutils. There are certainly errors and
+omissions in this manual. If you report them, they will get fixed. If
+you don't, no one will ever know about them and they will remain unfixed
+for all eternity, if not longer.
+
+If you find a bug in zutils, please send electronic mail to
+@email{lzip-bug@@nongnu.org}. Include the version number, which you can
+find by running @w{@samp{zdiff --version}}.
+
+
+@node Concept Index
+@unnumbered Concept Index
+
+@printindex cp
+
+@bye
diff --git a/testsuite/check.sh b/testsuite/check.sh
new file mode 100755
index 0000000..5d20086
--- /dev/null
+++ b/testsuite/check.sh
@@ -0,0 +1,110 @@
+#! /bin/sh
+# check script for Zutils - Utilities dealing with compressed files
+# Copyright (C) 2009 Antonio Diaz Diaz.
+#
+# This script is free software: you have unlimited permission
+# to copy, distribute and modify it.
+
+LC_ALL=C
+export LC_ALL
+objdir=`pwd`
+testdir=`cd "$1" ; pwd`
+ZCAT="${objdir}"/zcat
+ZDIFF="${objdir}"/zdiff
+ZGREP="${objdir}"/zgrep
+compressors="gzip bzip2 lzip"
+extensions="gz bz2 lz"
+framework_failure() { echo 'failure in testing framework'; exit 1; }
+
+if [ ! -x "${ZCAT}" ] ; then
+ echo "${ZCAT}: cannot execute"
+ exit 1
+fi
+
+if [ -d tmp ] ; then rm -r tmp ; fi
+mkdir tmp
+echo -n "testing zutils..."
+cd "${objdir}"/tmp
+
+for i in ${compressors}; do
+ cat "${testdir}"/../COPYING > in || framework_failure
+ $i in || framework_failure
+ echo -n .
+done
+
+cat "${testdir}"/../COPYING > in || framework_failure
+cat in > -in- || framework_failure
+cat in.lz > -in-.lz || framework_failure
+cat in in in in in > in5 || framework_failure
+fail=0
+
+
+for i in ${extensions}; do
+ "${ZCAT}" in.$i > copy || fail=1
+ cmp in copy || fail=1
+ echo -n .
+done
+
+"${ZCAT}" in in.gz in.bz2 in.lz -- -in- > copy5 || fail=1
+cmp in5 copy5 || fail=1
+echo -n .
+
+
+for i in ${extensions}; do
+ "${ZDIFF}" in.$i || fail=1
+ echo -n .
+ "${ZDIFF}" in in.$i || fail=1
+ echo -n .
+ "${ZDIFF}" in.$i in || fail=1
+ echo -n .
+done
+
+"${ZDIFF}" in || fail=1
+echo -n .
+"${ZDIFF}" in.lz in.gz || fail=1
+echo -n .
+"${ZDIFF}" in.gz -- -in-.lz || fail=1
+echo -n .
+"${ZDIFF}" -- -in-.lz in.gz || fail=1
+echo -n .
+"${ZDIFF}" in -- -in-.lz || fail=1
+echo -n .
+"${ZDIFF}" -- -in- in.lz || fail=1
+echo -n .
+"${ZDIFF}" in.lz -- -in- || fail=1
+echo -n .
+"${ZDIFF}" -- -in-.lz in || fail=1
+echo -n .
+"${ZDIFF}" -- -in- in || fail=1
+echo -n .
+"${ZDIFF}" in -- -in- || fail=1
+echo -n .
+
+
+for i in ${extensions}; do
+ "${ZDIFF}" --cmp in.$i || fail=1
+ echo -n .
+ "${ZDIFF}" --cmp in in.$i || fail=1
+ echo -n .
+ "${ZDIFF}" --cmp in.$i in || fail=1
+ echo -n .
+done
+
+
+for i in ${extensions}; do
+ "${ZGREP}" License in.$i 2>&1 > /dev/null || fail=1
+ echo -n .
+done
+
+"${ZGREP}" License in in.gz in.bz2 in.lz -- -in- 2>&1 > /dev/null || fail=1
+echo -n .
+
+
+echo
+if test ${fail} = 0; then
+ echo "tests completed successfully."
+ cd "${objdir}" && rm -r tmp
+else
+ echo "tests failed."
+fi
+exit ${fail}
diff --git a/zcat.in b/zcat.in
new file mode 100644
index 0000000..f5590ea
--- /dev/null
+++ b/zcat.in
@@ -0,0 +1,107 @@
+#! /bin/sh
+# Zcat - Cat wrapper for compressed files.
+# Copyright (C) 2009 Antonio Diaz Diaz.
+#
+# This script is free software: you have unlimited permission
+# to copy, distribute and modify it.
+
+LC_ALL=C
+export LC_ALL
+invocation_name=$0
+args=
+default_prog=lzip
+
+# Loop over args until pattern is found
+while [ x"$1" != x ] ; do
+
+ case "$1" in
+ --help | --he* | -h)
+ echo "Zcat - Cat wrapper for compressed files."
+ echo
+ echo "Zcat is a wrapper script around the cat command that allows"
+ echo "transparent concatenation of any combination of compressed and"
+ echo "non-compressed files. If any given file is compressed, its uncompressed"
+ echo "content is used. If a given file does not exist, zcat tries the"
+ echo "compressed file name corresponding to the default compressor selected."
+ echo "The supported compressors are gzip, bzip2, lzip and xz."
+ echo
+ echo "Usage: ${invocation_name} [OPTIONS] [CAT_OPTIONS] [FILES]"
+ echo
+ echo "CAT_OPTIONS are passed directly to cat."
+ echo "The exit status from cat is preserved."
+ echo
+ echo "Options:"
+ echo " -h, --help display this help and exit"
+ echo " -V, --version output version information and exit"
+ echo " --gzip use gzip as default decompressor"
+ echo " --bzip2 use bzip2 as default decompressor"
+ echo " --lzip use lzip as default decompressor (default)"
+ echo " --xz use xz as default decompressor"
+ echo
+ echo "Report bugs to lzip-bug@nongnu.org"
+ echo "Lzip home page: http://www.nongnu.org/lzip/lzip.html"
+ exit 0 ;;
+ --version | --ve* | -V)
+ echo "Zcat VERSION"
+ echo "Copyright (C) 2009 Antonio Diaz Diaz."
+ echo "This script is free software: you have unlimited permission"
+ echo "to copy, distribute and modify it."
+ exit 0 ;;
+ --gz*)
+ default_prog=gzip ;;
+ --bz*)
+ default_prog=bzip2 ;;
+ --lz*)
+ default_prog=lzip ;;
+ --xz*)
+ default_prog=xz ;;
+ -)
+ ;;
+ --)
+ shift; break ;;
+ -?*)
+ args="${args} $1" ;;
+ *)
+ break ;;
+ esac
+ shift
+done
+
+if test $# -eq 0; then
+ ${default_prog} -cd | cat ${args}
+ exit $?
+fi
+
+retval=0
+for i in "$@" ; do
+ prog="${default_prog} -cdfq"
+ case "$i" in
+ *.gz | *.tgz)
+ prog="gzip -cdfq" ;;
+ *.bz2 | *.tbz | *.tbz2)
+ prog="bzip2 -cdfq" ;;
+ *.lz | *.tlz)
+ prog="lzip -cdfq" ;;
+ *.xz | *.txz)
+ prog="xz -cdfq" ;;
+ *)
+ if test -f "$i"; then prog=cat
+ else
+ case ${default_prog} in
+ gzip)
+ if test -f "$i.gz"; then i="$i.gz"; fi ;;
+ bzip2)
+ if test -f "$i.bz2"; then i="$i.bz2"; fi ;;
+ lzip)
+ if test -f "$i.lz"; then i="$i.lz"; fi ;;
+ xz)
+ if test -f "$i.xz"; then i="$i.xz"; fi ;;
+ esac
+ fi ;;
+ esac
+ ${prog} -- "$i" | cat ${args}
+ r=$?
+ test "$r" -ne 0 && retval="$r"
+done
+
+exit ${retval}
diff --git a/zcmp.in b/zcmp.in
new file mode 100644
index 0000000..7470da9
--- /dev/null
+++ b/zcmp.in
@@ -0,0 +1,2 @@
+#! /bin/sh
+exec zdiff --cmp "$@"
diff --git a/zdiff.in b/zdiff.in
new file mode 100644
index 0000000..4be41d8
--- /dev/null
+++ b/zdiff.in
@@ -0,0 +1,171 @@
+#! /bin/sh
+# Zdiff - Diff/cmp wrapper for compressed files.
+# Copyright (C) 2008, 2009 Antonio Diaz Diaz.
+#
+# This script is free software: you have unlimited permission
+# to copy, distribute and modify it.
+
+LC_ALL=C
+export LC_ALL
+invocation_name=$0
+args=
+default_ext=.lz
+diff_prog=diff
+file1=
+file2=
+
+# Loop over args
+while [ x"$1" != x ] ; do
+
+ case "$1" in
+ --help | --he* | -h)
+ echo "Zdiff - Diff/cmp wrapper for compressed files."
+ echo
+ echo "Zdiff is a wrapper script around the diff and cmp commands that allows"
+ echo "transparent comparison of any combination of compressed and"
+ echo "non-compressed files. If any given file is compressed, its uncompressed"
+ echo "content is used. The supported compressors are gzip, bzip2, lzip and xz."
+ echo
+ echo "Zcmp is a shortcut for \"zdiff --cmp\""
+ echo
+ echo "Usage: ${invocation_name} [OPTIONS] [DIFF_OPTIONS] FILE1 [FILE2]"
+ echo
+ echo "Compares FILE1 to FILE2. If FILE2 is omitted, compares FILE1 to the"
+ echo "uncompressed contents of FILE1.[gz|bz2|lz] (depending on the default"
+ echo "compressor selected). DIFF_OPTIONS are passed directly to diff or cmp."
+ echo "The exit status from diff or cmp is preserved."
+ echo
+ echo "Options:"
+ echo " -h, --help display this help and exit"
+ echo " -V, --version output version information and exit"
+ echo " --gzip use gzip as default decompressor"
+ echo " --bzip2 use bzip2 as default decompressor"
+ echo " --lzip use lzip as default decompressor (default)"
+ echo " --xz use xz as default decompressor"
+ echo " --diff use diff to compare files (default)"
+ echo " --cmp use cmp to compare files"
+ echo
+ echo "Report bugs to lzip-bug@nongnu.org"
+ echo "Lzip home page: http://www.nongnu.org/lzip/lzip.html"
+ exit 0 ;;
+ --version | --ve* | -V)
+ echo "Zdiff VERSION"
+ echo "Copyright (C) 2009 Antonio Diaz Diaz."
+ echo "This script is free software: you have unlimited permission"
+ echo "to copy, distribute and modify it."
+ exit 0 ;;
+ --gz*)
+ default_ext=.gz ;;
+ --bz*)
+ default_ext=.bz2 ;;
+ --lz*)
+ default_ext=.lz ;;
+ --xz*)
+ default_prog=xz ;;
+ --diff)
+ diff_prog=diff ;;
+ --cmp)
+ diff_prog=cmp ;;
+ -)
+ echo "${invocation_name}: reading from stdin not supported"
+ exit 1 ;;
+ --)
+ shift; break ;;
+ -?*)
+ args="${args} $1" ;;
+ *)
+ break ;;
+ esac
+ shift
+done
+
+# Loop over files
+while [ x"$1" != x ] ; do
+ if [ "$1" != "--" ] ; then
+ if test -f "$1"; then
+ if test -z "${file1}"; then file1="$1"
+ else
+ if test -z "${file2}"; then file2="$1"
+ else
+ echo "${invocation_name}: Too many files; use --help for usage." 1>&2
+ fi
+ fi
+ else
+ echo "${invocation_name}: File \"$1\" not found or not a regular file" 1>&2
+ exit 1
+ fi
+ fi
+ shift
+done
+
+if test -z "${file1}"; then
+ echo "${invocation_name}: No files given; use --help for usage." 1>&2
+ exit 1
+fi
+
+if test -z "${file2}"; then
+ case "${file1}" in
+ *.gz)
+ file2=`printf "%s" "${file1}" | sed 's/.gz$//'` ;;
+ *.tgz)
+ file2=`printf "%s" "${file1}" | sed 's/tgz$/tar/'` ;;
+ *.bz2)
+ file2=`printf "%s" "${file1}" | sed 's/.bz2$//'` ;;
+ *.tbz)
+ file2=`printf "%s" "${file1}" | sed 's/tbz$/tar/'` ;;
+ *.tbz2)
+ file2=`printf "%s" "${file1}" | sed 's/tbz2$/tar/'` ;;
+ *.lz)
+ file2=`printf "%s" "${file1}" | sed 's/.lz$//'` ;;
+ *.tlz)
+ file2=`printf "%s" "${file1}" | sed 's/tlz$/tar/'` ;;
+ *.xz)
+ file2=`printf "%s" "${file1}" | sed 's/.xz$//'` ;;
+ *.txz)
+ file2=`printf "%s" "${file1}" | sed 's/txz$/tar/'` ;;
+ *)
+ file2="${file1}${default_ext}" ;;
+ esac
+fi
+
+prog1=
+prog2=
+case "${file1}" in
+*.gz | *.tgz) prog1=gzip ;;
+*.bz2 | *.tbz | *.tbz2) prog1=bzip2 ;;
+*.lz | *.tlz) prog1=lzip ;;
+*.xz | *.txz) prog1=xz ;;
+esac
+case "${file2}" in
+*.gz | *.tgz) prog2=gzip ;;
+*.bz2 | *.tbz | *.tbz2) prog2=bzip2 ;;
+*.lz | *.tlz) prog2=lzip ;;
+*.xz | *.txz) prog2=xz ;;
+esac
+
+retval=0
+if test -n "${prog1}"; then
+ if test -n "${prog2}"; then
+ tmp_file=`mktemp "${TMPDIR:-/tmp}"/zdiff.XXXXXXXXXX` || {
+ echo 'cannot create a temporary file' 1>&2
+ exit 1
+ }
+ ${prog2} -cdfq -- "${file2}" > "${tmp_file}" || exit 1
+ ${prog1} -cdfq -- "${file1}" | ${diff_prog} ${args} - -- "${tmp_file}"
+ retval=$?
+ rm -f "${tmp_file}" || retval=$?
+ else
+ ${prog1} -cdfq -- "${file1}" | ${diff_prog} ${args} - -- "${file2}"
+ retval=$?
+ fi
+else
+ if test -n "${prog2}"; then
+ ${prog2} -cdfq -- "${file2}" | ${diff_prog} ${args} -- "${file1}" -
+ retval=$?
+ else
+ ${diff_prog} ${args} -- "${file1}" "${file2}"
+ retval=$?
+ fi
+fi
+
+exit ${retval}
diff --git a/zgrep.in b/zgrep.in
new file mode 100644
index 0000000..3d9e8f3
--- /dev/null
+++ b/zgrep.in
@@ -0,0 +1,142 @@
+#! /bin/sh
+# Zgrep - Grep wrapper for compressed files.
+# Copyright (C) 2008, 2009 Antonio Diaz Diaz.
+#
+# This script is free software: you have unlimited permission
+# to copy, distribute and modify it.
+
+LC_ALL=C
+export LC_ALL
+invocation_name=$0
+args=
+default_prog=lzip
+have_pat=0
+list=0
+no_name=0
+
+# Loop over args until pattern is found
+while [ x"$1" != x ] ; do
+
+ case "$1" in
+ --help | --he* | -h)
+ echo "Zgrep - Grep wrapper for compressed files."
+ echo
+ echo "Zgrep is a wrapper script around the grep command that allows"
+ echo "transparent search on any combination of compressed and non-compressed"
+ echo "files. If any given file is compressed, its uncompressed content is"
+ echo "used. If a given file does not exist, zgrep tries the compressed file"
+ echo "name corresponding to the default compressor selected. The supported"
+ echo "compressors are gzip, bzip2, lzip and xz."
+ echo
+ echo "Usage: ${invocation_name} [OPTIONS] [GREP_OPTIONS] PATTERN [FILES]"
+ echo
+ echo "GREP_OPTIONS are passed directly to grep."
+ echo "The exit status from grep is preserved."
+ echo
+ echo "Options:"
+ echo " -h, --help display this help and exit"
+ echo " -V, --version output version information and exit"
+ echo " --gzip use gzip as default decompressor"
+ echo " --bzip2 use bzip2 as default decompressor"
+ echo " --lzip use lzip as default decompressor (default)"
+ echo " --xz use xz as default decompressor"
+ echo
+ echo "Report bugs to lzip-bug@nongnu.org"
+ echo "Lzip home page: http://www.nongnu.org/lzip/lzip.html"
+ exit 0 ;;
+ --version | --ve* | -V)
+ echo "Zgrep VERSION"
+ echo "Copyright (C) 2009 Antonio Diaz Diaz."
+ echo "This script is free software: you have unlimited permission"
+ echo "to copy, distribute and modify it."
+ exit 0 ;;
+ --gz*)
+ default_prog=gzip ;;
+ --bz*)
+ default_prog=bzip2 ;;
+ --lz*)
+ default_prog=lzip ;;
+ --xz*)
+ default_prog=xz ;;
+ -[drRzZ] | --di* | --exc* | --inc* | --nu* | --rec*)
+ echo "${invocation_name}: option $1 not supported"
+ exit 1 ;;
+ -e?* | -f?* | --file=* | --reg*=*)
+ args="${args} $1"; have_pat=1 ;;
+ -e | -f | --file | --reg*)
+ args="${args} $1 $2"; shift; have_pat=1 ;;
+ --*=*)
+ args="${args} $1" ;;
+ -[ABCDm] | --af* | --be* | --binary-* | --con* | --de* | --[lm]a*)
+ args="${args} $1 $2"; shift ;;
+ -l | --files-with-*)
+ args="${args} $1"; list=1 ;;
+ -h | --no-f*)
+ args="${args} $1"; no_name=1 ;;
+ --)
+ break ;;
+ -?*)
+ args="${args} $1" ;;
+ *)
+ if test ${have_pat} = 0; then args="${args} $1"; have_pat=1
+ else break
+ fi ;;
+ esac
+ shift
+done
+
+if test ${have_pat} = 0; then
+ echo "${invocation_name}: Pattern not found; use --help for usage." 1>&2
+ exit 1
+fi
+
+if test $# -eq 0; then
+ ${default_prog} -cdfq | grep ${args}
+ exit $?
+fi
+
+retval=0
+for i in "$@" ; do
+ prog="${default_prog} -cdfq"
+ case "$i" in
+ *.gz | *.tgz)
+ prog="gzip -cdfq" ;;
+ *.bz2 | *.tbz | *.tbz2)
+ prog="bzip2 -cdfq" ;;
+ *.lz | *.tlz)
+ prog="lzip -cdfq" ;;
+ *.xz | *.txz)
+ prog="xz -cdfq" ;;
+ *)
+ if test -f "$i"; then prog=cat
+ else
+ case ${default_prog} in
+ gzip)
+ if test -f "$i.gz"; then i="$i.gz"; fi ;;
+ bzip2)
+ if test -f "$i.bz2"; then i="$i.bz2"; fi ;;
+ lzip)
+ if test -f "$i.lz"; then i="$i.lz"; fi ;;
+ xz)
+ if test -f "$i.xz"; then i="$i.xz"; fi ;;
+ esac
+ fi ;;
+ esac
+ if test ${list} -eq 1; then
+ ${prog} -- "$i" | grep ${args} 2>&1 > /dev/null && echo "$i"
+ r=$?
+ elif test $# -eq 1 -o ${no_name} -eq 1; then
+ ${prog} -- "$i" | grep ${args}
+ r=$?
+ else
+ j=`printf "%s" "$i" | sed 's/\\\\/\\\\\\\\/g'`
+ j=`printf "%s" "$j" | sed 's/|/\\\\|/g'`
+ j=`printf "%s" "$j" | sed 's/&/\\\\&/g'`
+ j=`printf "%s" "$j" | tr '\n' ' '`
+ ${prog} -- "$i" | grep ${args} | sed "s|^|${j}:|"
+ r=$?
+ fi
+ test "$r" -ne 0 && retval="$r"
+done
+
+exit ${retval}