summaryrefslogtreecommitdiffstats
path: root/popt/poptparse.c
diff options
context:
space:
mode:
Diffstat (limited to 'popt/poptparse.c')
-rw-r--r--popt/poptparse.c231
1 files changed, 231 insertions, 0 deletions
diff --git a/popt/poptparse.c b/popt/poptparse.c
new file mode 100644
index 0000000..e003a04
--- /dev/null
+++ b/popt/poptparse.c
@@ -0,0 +1,231 @@
+/** \ingroup popt
+ * \file popt/poptparse.c
+ */
+
+/* (C) 1998-2002 Red Hat, Inc. -- Licensing details are in the COPYING
+ file accompanying popt source distributions, available from
+ ftp://ftp.rpm.org/pub/rpm/dist. */
+
+#include "system.h"
+
+#include "poptint.h"
+
+#define POPT_ARGV_ARRAY_GROW_DELTA 5
+
+/*@-boundswrite@*/
+int poptDupArgv(int argc, const char **argv,
+ int * argcPtr, const char *** argvPtr)
+{
+ size_t nb = (argc + 1) * sizeof(*argv);
+ const char ** argv2;
+ char * dst;
+ int i;
+
+ if (argc <= 0 || argv == NULL) /* XXX can't happen */
+ return POPT_ERROR_NOARG;
+ for (i = 0; i < argc; i++) {
+ if (argv[i] == NULL)
+ return POPT_ERROR_NOARG;
+ nb += strlen(argv[i]) + 1;
+ }
+
+ dst = malloc(nb);
+ if (dst == NULL) /* XXX can't happen */
+ return POPT_ERROR_MALLOC;
+ argv2 = (void *) dst;
+ dst += (argc + 1) * sizeof(*argv);
+
+ /*@-branchstate@*/
+ for (i = 0; i < argc; i++) {
+ argv2[i] = dst;
+ dst += strlcpy(dst, argv[i], nb) + 1;
+ }
+ /*@=branchstate@*/
+ argv2[argc] = NULL;
+
+ if (argvPtr) {
+ *argvPtr = argv2;
+ } else {
+ free(argv2);
+ argv2 = NULL;
+ }
+ if (argcPtr)
+ *argcPtr = argc;
+ return 0;
+}
+/*@=boundswrite@*/
+
+/*@-bounds@*/
+int poptParseArgvString(const char * s, int * argcPtr, const char *** argvPtr)
+{
+ const char * src;
+ char quote = '\0';
+ int argvAlloced = POPT_ARGV_ARRAY_GROW_DELTA;
+ const char ** argv = malloc(sizeof(*argv) * argvAlloced);
+ int argc = 0;
+ int buflen = strlen(s) + 1;
+ char * buf = memset(alloca(buflen), 0, buflen);
+ int rc = POPT_ERROR_MALLOC;
+
+ if (argv == NULL) return rc;
+ argv[argc] = buf;
+
+ for (src = s; *src != '\0'; src++) {
+ if (quote == *src) {
+ quote = '\0';
+ } else if (quote != '\0') {
+ if (*src == '\\') {
+ src++;
+ if (!*src) {
+ rc = POPT_ERROR_BADQUOTE;
+ goto exit;
+ }
+ if (*src != quote) *buf++ = '\\';
+ }
+ *buf++ = *src;
+ } else if (isSpace(src)) {
+ if (*argv[argc] != '\0') {
+ buf++, argc++;
+ if (argc == argvAlloced) {
+ argvAlloced += POPT_ARGV_ARRAY_GROW_DELTA;
+ argv = realloc(argv, sizeof(*argv) * argvAlloced);
+ if (argv == NULL) goto exit;
+ }
+ argv[argc] = buf;
+ }
+ } else switch (*src) {
+ case '"':
+ case '\'':
+ quote = *src;
+ /*@switchbreak@*/ break;
+ case '\\':
+ src++;
+ if (!*src) {
+ rc = POPT_ERROR_BADQUOTE;
+ goto exit;
+ }
+ /*@fallthrough@*/
+ default:
+ *buf++ = *src;
+ /*@switchbreak@*/ break;
+ }
+ }
+
+ if (strlen(argv[argc])) {
+ argc++, buf++;
+ }
+
+ rc = poptDupArgv(argc, argv, argcPtr, argvPtr);
+
+exit:
+ if (argv) free(argv);
+ return rc;
+}
+/*@=bounds@*/
+
+/* still in the dev stage.
+ * return values, perhaps 1== file erro
+ * 2== line to long
+ * 3== umm.... more?
+ */
+int poptConfigFileToString(FILE *fp, char ** argstrp, /*@unused@*/ UNUSED(int flags))
+{
+ char line[999];
+ char * argstr;
+ char * p;
+ char * q;
+ char * x;
+ int t;
+ int argvlen = 0;
+ size_t maxlinelen = sizeof(line);
+ size_t linelen;
+ int maxargvlen = 480;
+ int linenum = 0;
+
+ *argstrp = NULL;
+
+ /* | this_is = our_line
+ * p q x
+ */
+
+ if (fp == NULL)
+ return POPT_ERROR_NULLARG;
+
+ argstr = calloc(maxargvlen, sizeof(*argstr));
+ if (argstr == NULL) return POPT_ERROR_MALLOC;
+
+ while (fgets(line, (int)maxlinelen, fp) != NULL) {
+ linenum++;
+ p = line;
+
+ /* loop until first non-space char or EOL */
+ while( *p != '\0' && isSpace(p) )
+ p++;
+
+ linelen = strlen(p);
+ if (linelen >= maxlinelen-1) {
+ free(argstr);
+ return POPT_ERROR_OVERFLOW; /* XXX line too long */
+ }
+
+ if (*p == '\0' || *p == '\n') continue; /* line is empty */
+ if (*p == '#') continue; /* comment line */
+
+ q = p;
+
+ while (*q != '\0' && (!isSpace(q)) && *q != '=')
+ q++;
+
+ if (isSpace(q)) {
+ /* a space after the name, find next non space */
+ *q++='\0';
+ while( *q != '\0' && isSpace(q) ) q++;
+ }
+ if (*q == '\0') {
+ /* single command line option (ie, no name=val, just name) */
+ q[-1] = '\0'; /* kill off newline from fgets() call */
+ argvlen += (t = q - p) + (sizeof(" --")-1);
+ if (argvlen >= maxargvlen) {
+ maxargvlen = (t > maxargvlen) ? t*2 : maxargvlen*2;
+ argstr = realloc(argstr, maxargvlen);
+ if (argstr == NULL) return POPT_ERROR_MALLOC;
+ }
+ strlcat(argstr, " --", maxargvlen);
+ strlcat(argstr, p, maxargvlen);
+ continue;
+ }
+ if (*q != '=')
+ continue; /* XXX for now, silently ignore bogus line */
+
+ /* *q is an equal sign. */
+ *q++ = '\0';
+
+ /* find next non-space letter of value */
+ while (*q != '\0' && isSpace(q))
+ q++;
+ if (*q == '\0')
+ continue; /* XXX silently ignore missing value */
+
+ /* now, loop and strip all ending whitespace */
+ x = p + linelen;
+ while (isSpace(--x))
+ *x = 0; /* null out last char if space (including fgets() NL) */
+
+ /* rest of line accept */
+ t = x - p;
+ argvlen += t + (sizeof("' --='")-1);
+ if (argvlen >= maxargvlen) {
+ maxargvlen = (t > maxargvlen) ? t*2 : maxargvlen*2;
+ argstr = realloc(argstr, maxargvlen);
+ if (argstr == NULL) return POPT_ERROR_MALLOC;
+ }
+ strlcat(argstr, " --", maxargvlen);
+ strlcat(argstr, p, maxargvlen);
+ strlcat(argstr, "=\"", maxargvlen);
+ strlcat(argstr, q, maxargvlen);
+ strlcat(argstr, "\"", maxargvlen);
+ }
+
+ *argstrp = argstr;
+ return 0;
+}