Posted to tcl by jdc at Sat Mar 24 16:21:41 GMT 2007view raw
- /*
- *-------------------------------------------------------------------------
- *
- * setargv --
- *
- * Parse the Windows command line string into argc/argv. Done here
- * because we don't trust the builtin argument parser in crt0.
- * Windows applications are responsible for breaking their command
- * line into arguments.
- *
- * 2N backslashes + quote -> N backslashes + begin quoted string
- * 2N + 1 backslashes + quote -> literal
- * N backslashes + non-quote -> literal
- * quote + quote in a quoted string -> single quote
- * quote + quote not in quoted string -> empty string
- * quote -> begin quoted string
- *
- * Results:
- * Fills argcPtr with the number of arguments and argvPtr with the
- * array of arguments.
- *
- * Side effects:
- * Memory allocated.
- *
- *--------------------------------------------------------------------------
- */
- static void
- setargv(argcPtr, argvPtr)
- int *argcPtr; /* Filled with number of argument strings. */
- char ***argvPtr; /* Filled with argument strings (malloc'd). */
- {
- char *cmdLine, *p, *arg, *argSpace;
- char **argv;
- int argc, size, inquote, copy, slashes;
- cmdLine = GetCommandLine(); /* INTL: BUG */
- /*
- * Precompute an overly pessimistic guess at the number of arguments
- * in the command line by counting non-space spans.
- */
- size = 2;
- for (p = cmdLine; *p != '\0'; p++) {
- if ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
- size++;
- while ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
- p++;
- }
- if (*p == '\0') {
- break;
- }
- }
- }
- argSpace = (char *) Tcl_Alloc(
- (unsigned) (size * sizeof(char *) + strlen(cmdLine) + 1));
- argv = (char **) argSpace;
- argSpace += size * sizeof(char *);
- size--;
- p = cmdLine;
- for (argc = 0; argc < size; argc++) {
- argv[argc] = arg = argSpace;
- while ((*p == ' ') || (*p == '\t')) { /* INTL: ISO space. */
- p++;
- }
- if (*p == '\0') {
- break;
- }
- inquote = 0;
- slashes = 0;
- while (1) {
- copy = 1;
- while (*p == '\\') {
- slashes++;
- p++;
- }
- if (*p == '"') {
- if ((slashes & 1) == 0) {
- copy = 0;
- if ((inquote) && (p[1] == '"')) {
- p++;
- copy = 1;
- } else {
- inquote = !inquote;
- }
- }
- slashes >>= 1;
- }
- while (slashes) {
- *arg = '\\';
- arg++;
- slashes--;
- }
- if ((*p == '\0')
- || (!inquote && ((*p == ' ') || (*p == '\t')))) { /* INTL: ISO space. */
- break;
- }
- if (copy != 0) {
- *arg = *p;
- arg++;
- }
- p++;
- }
- *arg = '\0';
- argSpace = arg + 1;
- }
- argv[argc] = NULL;
- *argcPtr = argc;
- *argvPtr = argv;
- }