diff options
Diffstat (limited to 'Build/source/libs/xpdf/goo/parseargs.c')
-rw-r--r-- | Build/source/libs/xpdf/goo/parseargs.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/Build/source/libs/xpdf/goo/parseargs.c b/Build/source/libs/xpdf/goo/parseargs.c new file mode 100644 index 00000000000..f77cc85c821 --- /dev/null +++ b/Build/source/libs/xpdf/goo/parseargs.c @@ -0,0 +1,190 @@ +/* + * parseargs.h + * + * Command line argument parser. + * + * Copyright 1996-2003 Glyph & Cog, LLC + */ + +#include <stdio.h> +#include <stddef.h> +#include <string.h> +#include <stdlib.h> +#include <ctype.h> +#include "parseargs.h" + +static ArgDesc *findArg(ArgDesc *args, char *arg); +static GBool grabArg(ArgDesc *arg, int i, int *argc, char *argv[]); + +GBool parseArgs(ArgDesc *args, int *argc, char *argv[]) { + ArgDesc *arg; + int i, j; + GBool ok; + + ok = gTrue; + i = 1; + while (i < *argc) { + if (!strcmp(argv[i], "--")) { + --*argc; + for (j = i; j < *argc; ++j) + argv[j] = argv[j+1]; + break; + } else if ((arg = findArg(args, argv[i]))) { + if (!grabArg(arg, i, argc, argv)) + ok = gFalse; + } else { + ++i; + } + } + return ok; +} + +void printUsage(char *program, char *otherArgs, ArgDesc *args) { + ArgDesc *arg; + char *typ; + int w, w1; + + w = 0; + for (arg = args; arg->arg; ++arg) { + if ((w1 = strlen(arg->arg)) > w) + w = w1; + } + + fprintf(stderr, "Usage: %s [options]", program); + if (otherArgs) + fprintf(stderr, " %s", otherArgs); + fprintf(stderr, "\n"); + + for (arg = args; arg->arg; ++arg) { + fprintf(stderr, " %s", arg->arg); + w1 = 9 + w - strlen(arg->arg); + switch (arg->kind) { + case argInt: + case argIntDummy: + typ = " <int>"; + break; + case argFP: + case argFPDummy: + typ = " <fp>"; + break; + case argString: + case argStringDummy: + typ = " <string>"; + break; + case argFlag: + case argFlagDummy: + default: + typ = ""; + break; + } + fprintf(stderr, "%-*s", w1, typ); + if (arg->usage) + fprintf(stderr, ": %s", arg->usage); + fprintf(stderr, "\n"); + } +} + +static ArgDesc *findArg(ArgDesc *args, char *arg) { + ArgDesc *p; + + for (p = args; p->arg; ++p) { + if (p->kind < argFlagDummy && !strcmp(p->arg, arg)) + return p; + } + return NULL; +} + +static GBool grabArg(ArgDesc *arg, int i, int *argc, char *argv[]) { + int n; + int j; + GBool ok; + + ok = gTrue; + n = 0; + switch (arg->kind) { + case argFlag: + *(GBool *)arg->val = gTrue; + n = 1; + break; + case argInt: + if (i + 1 < *argc && isInt(argv[i+1])) { + *(int *)arg->val = atoi(argv[i+1]); + n = 2; + } else { + ok = gFalse; + n = 1; + } + break; + case argFP: + if (i + 1 < *argc && isFP(argv[i+1])) { + *(double *)arg->val = atof(argv[i+1]); + n = 2; + } else { + ok = gFalse; + n = 1; + } + break; + case argString: + if (i + 1 < *argc) { + strncpy((char *)arg->val, argv[i+1], arg->size - 1); + ((char *)arg->val)[arg->size - 1] = '\0'; + n = 2; + } else { + ok = gFalse; + n = 1; + } + break; + default: + fprintf(stderr, "Internal error in arg table\n"); + n = 1; + break; + } + if (n > 0) { + *argc -= n; + for (j = i; j < *argc; ++j) + argv[j] = argv[j+n]; + } + return ok; +} + +GBool isInt(char *s) { + if (*s == '-' || *s == '+') + ++s; + while (isdigit(*s & 0xff)) + ++s; + if (*s) + return gFalse; + return gTrue; +} + +GBool isFP(char *s) { + int n; + + if (*s == '-' || *s == '+') + ++s; + n = 0; + while (isdigit(*s & 0xff)) { + ++s; + ++n; + } + if (*s == '.') + ++s; + while (isdigit(*s & 0xff)) { + ++s; + ++n; + } + if (n > 0 && (*s == 'e' || *s == 'E')) { + ++s; + if (*s == '-' || *s == '+') + ++s; + n = 0; + if (!isdigit(*s & 0xff)) + return gFalse; + do { + ++s; + } while (isdigit(*s & 0xff)); + } + if (*s) + return gFalse; + return gTrue; +} |