119 lines
2.5 KiB
C
119 lines
2.5 KiB
C
/** \ingroup popt
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* \file popt/poptparse.c
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*/
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/* (C) 1998-2000 Red Hat, Inc. -- Licensing details are in the COPYING
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file accompanying popt source distributions, available from
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ftp://ftp.rpm.org/pub/rpm/dist. */
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#include "system.h"
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#define POPT_ARGV_ARRAY_GROW_DELTA 5
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int poptDupArgv(int argc, const char **argv,
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int * argcPtr, const char *** argvPtr)
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{
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size_t nb = (argc + 1) * sizeof(*argv);
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const char ** argv2;
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char * dst;
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int i;
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if (argc <= 0 || argv == NULL) /* XXX can't happen */
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return POPT_ERROR_NOARG;
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for (i = 0; i < argc; i++) {
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if (argv[i] == NULL)
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return POPT_ERROR_NOARG;
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nb += strlen(argv[i]) + 1;
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}
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dst = malloc(nb);
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if (dst == NULL) /* XXX can't happen */
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return POPT_ERROR_MALLOC;
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argv2 = (void *) dst;
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dst += (argc + 1) * sizeof(*argv);
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/*@-branchstate@*/
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for (i = 0; i < argc; i++) {
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argv2[i] = dst;
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dst += strlen(strcpy(dst, argv[i])) + 1;
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}
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/*@=branchstate@*/
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argv2[argc] = NULL;
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if (argvPtr) {
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*argvPtr = argv2;
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} else {
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free(argv2);
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argv2 = NULL;
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}
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if (argcPtr)
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*argcPtr = argc;
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return 0;
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}
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int poptParseArgvString(const char * s, int * argcPtr, const char *** argvPtr)
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{
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const char * src;
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char quote = '\0';
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int argvAlloced = POPT_ARGV_ARRAY_GROW_DELTA;
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const char ** argv = malloc(sizeof(*argv) * argvAlloced);
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int argc = 0;
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int buflen = strlen(s) + 1;
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char * buf = memset(alloca(buflen), 0, buflen);
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int rc = POPT_ERROR_MALLOC;
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if (argv == NULL) return rc;
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argv[argc] = buf;
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for (src = s; *src != '\0'; src++) {
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if (quote == *src) {
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quote = '\0';
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} else if (quote != '\0') {
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if (*src == '\\') {
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src++;
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if (!*src) {
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rc = POPT_ERROR_BADQUOTE;
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goto exit;
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}
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if (*src != quote) *buf++ = '\\';
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}
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*buf++ = *src;
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} else if (isspace(*src)) {
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if (*argv[argc] != '\0') {
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buf++, argc++;
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if (argc == argvAlloced) {
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argvAlloced += POPT_ARGV_ARRAY_GROW_DELTA;
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argv = realloc(argv, sizeof(*argv) * argvAlloced);
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if (argv == NULL) goto exit;
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}
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argv[argc] = buf;
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}
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} else switch (*src) {
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case '"':
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case '\'':
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quote = *src;
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/*@switchbreak@*/ break;
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case '\\':
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src++;
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if (!*src) {
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rc = POPT_ERROR_BADQUOTE;
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goto exit;
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}
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/*@fallthrough@*/
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default:
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*buf++ = *src;
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/*@switchbreak@*/ break;
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}
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}
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if (strlen(argv[argc])) {
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argc++, buf++;
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}
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rc = poptDupArgv(argc, argv, argcPtr, argvPtr);
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exit:
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if (argv) free(argv);
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return rc;
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}
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