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authorDaniel Baumann <mail@daniel-baumann.ch>2015-11-07 14:46:27 +0000
committerDaniel Baumann <mail@daniel-baumann.ch>2015-11-07 14:46:27 +0000
commit8f0dfe974c171b0ef83f822c97aeef6a89b8641a (patch)
tree9e199f867cfd6b44a126096fc9c104f3a018338e /carg_parser.h
parentAdding upstream version 1.3. (diff)
downloadpdlzip-8f0dfe974c171b0ef83f822c97aeef6a89b8641a.tar.xz
pdlzip-8f0dfe974c171b0ef83f822c97aeef6a89b8641a.zip
Adding upstream version 1.4~rc1.upstream/1.4_rc1
Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>
Diffstat (limited to 'carg_parser.h')
-rw-r--r--carg_parser.h85
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+/* Pdlzip - Data compressor based on the LZMA algorithm
+ Copyright (C) 2010, 2011, 2012 Antonio Diaz Diaz.
+
+ This program is free software: you have unlimited permission
+ to copy, distribute and modify it.
+
+ 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.
+*/
+
+/* Arg_parser reads the arguments in 'argv' and creates a number of
+ option codes, option arguments and non-option arguments.
+
+ In case of error, 'ap_error' returns a non-null pointer to an error
+ message.
+
+ 'options' is an array of 'struct ap_Option' terminated by an element
+ containing a code which is zero. A null name means a short-only
+ option. A code value outside the unsigned char range means a
+ long-only option.
+
+ Arg_parser normally makes it appear as if all the option arguments
+ were specified before all the non-option arguments for the purposes
+ of parsing, even if the user of your program intermixed option and
+ non-option arguments. If you want the arguments in the exact order
+ the user typed them, call 'ap_init' with 'in_order' = true.
+
+ The argument '--' terminates all options; any following arguments are
+ treated as non-option arguments, even if they begin with a hyphen.
+
+ The syntax for optional option arguments is '-<short_option><argument>'
+ (without whitespace), or '--<long_option>=<argument>'.
+*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+enum ap_Has_arg { ap_no, ap_yes, ap_maybe };
+
+struct ap_Option
+ {
+ int code; /* Short option letter or code ( code != 0 ) */
+ const char * name; /* Long option name (maybe null) */
+ enum ap_Has_arg has_arg;
+ };
+
+
+struct ap_Record
+ {
+ int code;
+ char * argument;
+ };
+
+
+struct Arg_parser
+ {
+ struct ap_Record * data;
+ char * error;
+ int data_size;
+ int error_size;
+ };
+
+
+char ap_init( struct Arg_parser * const ap,
+ const int argc, const char * const argv[],
+ const struct ap_Option options[], const char in_order );
+
+void ap_free( struct Arg_parser * const ap );
+
+const char * ap_error( const struct Arg_parser * const ap );
+
+ /* The number of arguments parsed (may be different from argc) */
+int ap_arguments( const struct Arg_parser * const ap );
+
+ /* If ap_code( i ) is 0, ap_argument( i ) is a non-option.
+ Else ap_argument( i ) is the option's argument (or empty). */
+int ap_code( const struct Arg_parser * const ap, const int i );
+
+const char * ap_argument( const struct Arg_parser * const ap, const int i );
+
+#ifdef __cplusplus
+}
+#endif