1 files changed, 125 insertions, 0 deletions
diff --git a/nsprpub/lib/libc/include/plgetopt.h b/nsprpub/lib/libc/include/plgetopt.h
new file mode 100644
index 0000000000..bd5181b1db
--- /dev/null
+++ b/nsprpub/lib/libc/include/plgetopt.h
@@ -0,0 +1,125 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+** File:          plgetopt.h
+** Description:   utilities to parse argc/argv
+*/
+
+#if defined(PLGETOPT_H_)
+#else
+#define PLGETOPT_H_
+
+#include "prtypes.h"
+
+PR_BEGIN_EXTERN_C
+
+typedef struct PLOptionInternal PLOptionInternal;
+
+typedef enum
+{
+    PL_OPT_OK,              /* all's well with the option */
+    PL_OPT_EOL,             /* end of options list */
+    PL_OPT_BAD              /* invalid option (and value) */
+} PLOptStatus;
+
+typedef struct PLLongOpt
+{
+    const char * longOptName;   /* long option name string                  */
+    PRIntn       longOption;    /* value put in PLOptState for this option. */
+    PRBool       valueRequired; /* If option name not followed by '=',      */
+    /* value is the next argument from argv.    */
+} PLLongOpt;
+
+typedef struct PLOptState
+{
+    char option;                /* the name of the option */
+    const char *value;          /* the value of that option | NULL */
+
+    PLOptionInternal *internal; /* private processing state */
+
+    PRIntn   longOption;        /* value from PLLongOpt put here */
+    PRIntn   longOptIndex;      /* index into caller's array of PLLongOpts */
+} PLOptState;
+
+/*
+ * PL_CreateOptState
+ *
+ * The argument "options" points to a string of single-character option
+ * names.  Option names that may have an option argument value must be
+ * followed immediately by a ':' character.
+ */
+PR_EXTERN(PLOptState*) PL_CreateOptState(
+    PRIntn argc, char **argv, const char *options);
+
+/*
+ * PL_CreateLongOptState
+ *
+ * Alternative to PL_CreateOptState.
+ * Allows caller to specify BOTH a string of single-character option names,
+ * AND an array of structures describing "long" (keyword) option names.
+ * The array is terminated by a structure in which longOptName is NULL.
+ * Long option values (arguments) may always be given as "--name=value".
+ * If PLLongOpt.valueRequired is not PR_FALSE, and the option name was not
+ * followed by '=' then the next argument from argv is taken as the value.
+ */
+PR_EXTERN(PLOptState*) PL_CreateLongOptState(
+    PRIntn argc, char **argv, const char *options,
+    const PLLongOpt *longOpts);
+/*
+ * PL_DestroyOptState
+ *
+ * Call this to destroy the PLOptState returned from PL_CreateOptState or
+ * PL_CreateLongOptState.
+ */
+PR_EXTERN(void) PL_DestroyOptState(PLOptState *opt);
+
+/*
+ * PL_GetNextOpt
+ *
+ * When this function returns PL_OPT_OK,
+ * - opt->option will hold the single-character option name that was parsed,
+ *   or zero.
+ * When opt->option is zero, the token parsed was either a "long" (keyword)
+ *   option or a positional parameter.
+ * For a positional parameter,
+ * - opt->longOptIndex will contain -1, and
+ * - opt->value will point to the positional parameter string.
+ * For a long option name,
+ * - opt->longOptIndex will contain the non-negative index of the
+ *   PLLongOpt structure in the caller's array of PLLongOpt structures
+ *   corresponding to the long option name, and
+ * For a single-character or long option,
+ * - opt->longOption will contain the value of the single-character option
+ *   name, or the value of the longOption from the PLLongOpt structure
+ *   for that long option.  See notes below.
+ * - opt->value will point to the argument option string, or will
+ *   be NULL if option does not require argument.  If option requires
+ *   argument but it is not provided, PL_OPT_BAD is returned.
+ * When opt->option is non-zero,
+ * - opt->longOptIndex will be -1
+ * When this function returns PL_OPT_EOL, or PL_OPT_BAD, the contents of
+ *   opt are undefined.
+ *
+ * Notes: It is possible to ignore opt->option, and always look at
+ *   opt->longOption instead.  opt->longOption will contain the same value
+ *   as opt->option for single-character option names, and will contain the
+ *   value of longOption from the PLLongOpt structure for long option names.
+ * This means that it is possible to equivalence long option names to
+ *   single character names by giving the longOption in the PLLongOpt struct
+ *   the same value as the single-character option name.
+ * For long options that are NOT intended to be equivalent to any single-
+ *   character option, the longOption value should be chosen to not match
+ *   any possible single character name.  It might be advisable to choose
+ *   longOption values greater than 0xff for such long options.
+ */
+PR_EXTERN(PLOptStatus) PL_GetNextOpt(PLOptState *opt);
+
+PR_END_EXTERN_C
+
+#endif /* defined(PLGETOPT_H_) */
+
+/* plgetopt.h */
+