diff options
Diffstat (limited to 'generic/tclUtil.c')
| -rw-r--r-- | generic/tclUtil.c | 85 |
1 files changed, 84 insertions, 1 deletions
diff --git a/generic/tclUtil.c b/generic/tclUtil.c index 8981ff6..bed09bd 100644 --- a/generic/tclUtil.c +++ b/generic/tclUtil.c @@ -11,7 +11,7 @@ * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * - * RCS: @(#) $Id: tclUtil.c,v 1.76 2006/11/15 20:08:45 dgp Exp $ + * RCS: @(#) $Id: tclUtil.c,v 1.77 2006/11/28 22:20:29 andreas_kupries Exp $ */ #include "tclInt.h" @@ -483,6 +483,89 @@ Tcl_SplitList( return TCL_OK; } +int +TclMarkList( + Tcl_Interp *interp, /* Interpreter to use for error reporting. If + * NULL, no error message is left. */ + CONST char *list, /* Pointer to string with list structure. */ + CONST char* end, /* Pointer to first char after the list. */ + int *argcPtr, /* Pointer to location to fill in with the + * number of elements in the list. */ + CONST int** argszPtr, /* Pointer to place to store length of list + * elements. */ + CONST char ***argvPtr) /* Pointer to place to store pointer to array + * of pointers to list elements. */ +{ + CONST char **argv; + int* argn; + CONST char *l; + int length, size, i, result, elSize, brace; + CONST char *element; + + /* + * Figure out how much space to allocate. There must be enough space for + * the array of pointers and lengths. To estimate the number of pointers + * needed, count the number of whitespace characters in the list. + */ + + for (size = 2, l = list; l != end; l++) { + if (isspace(UCHAR(*l))) { /* INTL: ISO space. */ + size++; + /* Consecutive space can only count as a single list delimiter */ + while (1) { + char next = *(l + 1); + if ((l+1) == end) { + break; + } + ++l; + if (isspace(UCHAR(next))) { + continue; + } + break; + } + } + } + length = l - list; + argv = (CONST char **) ckalloc((unsigned) + ((size * sizeof(char *)))); + argn = (int*) ckalloc((unsigned) + ((size * sizeof(int *)))); + + for (i = 0; list != end; i++) { + CONST char *prevList = list; + + result = TclFindElement(interp, list, length, &element, + &list, &elSize, &brace); + length -= (list - prevList); + if (result != TCL_OK) { + ckfree((char *) argv); + ckfree((char *) argn); + return result; + } + if (*element == 0) { + break; + } + if (i >= size) { + ckfree((char *) argv); + ckfree((char *) argn); + if (interp != NULL) { + Tcl_SetResult(interp, "internal error in Tcl_SplitList", + TCL_STATIC); + } + return TCL_ERROR; + } + argv[i] = element; + argn[i] = elSize; + } + + argv[i] = NULL; + argn[i] = 0; + *argvPtr = argv; + *argszPtr = argn; + *argcPtr = i; + return TCL_OK; +} + /* *---------------------------------------------------------------------- * |