arospdf/goo/parseargs.h

   1 /*
   2  * parseargs.h
   3  *
   4  * Command line argument parser.
   5  *
   6  * Copyright 1996-2003 Glyph & Cog, LLC
   7  */
   8
   9 #ifndef PARSEARGS_H
  10 #define PARSEARGS_H
  11
  12 #ifdef __cplusplus
  13 extern "C" {
  14 #endif
  15
  16 #include "gtypes.h"
  17
  18 /*
  19  * Argument kinds.
  20  */
  21 typedef enum {
  22   argFlag,                      /* flag (present / not-present) */
  23                                 /*   [val: GBool *]             */
  24   argInt,                       /* integer arg    */
  25                                 /*   [val: int *] */
  26   argFP,                        /* floating point arg */
  27                                 /*   [val: double *]  */
  28   argString,                    /* string arg      */
  29                                 /*   [val: char *] */
  30   /* dummy entries -- these show up in the usage listing only; */
  31   /* useful for X args, for example                            */
  32   argFlagDummy,
  33   argIntDummy,
  34   argFPDummy,
  35   argStringDummy
  36 } ArgKind;
  37
  38 /*
  39  * Argument descriptor.
  40  */
  41 typedef struct {
  42   char *arg;                    /* the command line switch */
  43   ArgKind kind;                 /* kind of arg */
  44   void *val;                    /* place to store value */
  45   int size;                     /* for argString: size of string */
  46   char *usage;                  /* usage string */
  47 } ArgDesc;
  48
  49 /*
  50  * Parse command line.  Removes all args which are found in the arg
  51  * descriptor list <args>.  Stops parsing if "--" is found (and removes
  52  * it).  Returns gFalse if there was an error.
  53  */
  54 extern GBool parseArgs(ArgDesc *args, int *argc, char *argv[]);
  55
  56 /*
  57  * Print usage message, based on arg descriptor list.
  58  */
  59 extern void printUsage(char *program, char *otherArgs, ArgDesc *args);
  60
  61 /*
  62  * Check if a string is a valid integer or floating point number.
  63  */
  64 extern GBool isInt(char *s);
  65 extern GBool isFP(char *s);
  66
  67 #ifdef __cplusplus
  68 }
  69 #endif
  70
  71 #endif