166 lines
4.7 KiB
C
166 lines
4.7 KiB
C
/*
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Copyright (c) 1990-2001 Info-ZIP. All rights reserved.
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See the accompanying file LICENSE, version 2000-Apr-09 or later
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(the contents of which are also included in unzip.h) for terms of use.
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If, for some reason, all these files are missing, the Info-ZIP license
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also may be found at: ftp://ftp.info-zip.org/pub/infozip/license.html
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*/
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/*
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* _setargv.c - derived from an command argument expander
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*
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* Author : Jean-Michel Dubois
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* Date : 13-Dec-98
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*
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* Function: Looks for member names (fn.ft.mb) and add the libraries names
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* (fn.ft) to the list of files to zip to force inclusion of
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* libraries if necessary.
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* Strings beginning by a dash are considered as options and left
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* unchanged.
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*
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* Syntax : void _setargv(int *argc, char ***argv);
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*
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* Returns : new argc. Caller's argc and argv are updated.
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* If a insufficient memory condition occurs, return 0 and errno
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* is set to ENOMEM.
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*
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* Example :
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* main(int argc, char **argv)
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* {
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* if (_setargv(&argc, &argv)) {
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* ...
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*/
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#pragma library
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <malloc.h>
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#include <errno.h>
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#include <scr.h>
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#include <peek.h>
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/* Allocate argv array in 16 entries chunks */
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static int allocarg(int n, int asize, char ***nargv, char *s)
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{
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if ((n+1) > asize) { /* If array full */
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asize += 16; /* increase size and reallocate */
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if (!(*nargv = (char **) realloc(*nargv, asize * sizeof (void *)))) {
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errno = _errnum = ENOMEM; /* Not enough memory */
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return 0;
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}
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}
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(*nargv)[n] = strdup(s); /* Save argument */
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return asize; /* Return new maxsize */
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}
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/* check if file is a member of a library */
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static int ismember(char* path)
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{
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char* p;
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if ((p = strrchr(path, '/')) == NULL)
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p = path;
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return ((p = strchr(p, '.')) && (p = strchr(p + 1, '.')));
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}
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/* extract library name from a file name */
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static char* libname(char* path)
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{
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char* p;
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static char lib[256];
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char disk[3];
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strcpy(lib, path);
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if (p = strrchr(lib, ':')) {
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strncpy(disk, p, 2);
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disk[2] = '\0';
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*p = '\0' ;
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} else
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disk[0] = '\0';
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if ((p = strrchr(lib, '/')) == NULL)
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p = lib;
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p = strchr(p, '.');
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p = strchr(p + 1, '.');
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*p = 0;
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strcat(lib, disk);
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return lib;
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}
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/* Main body of the function */
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int _setargv(int *argc, char ***argv)
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{
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register int nargc; /* New arguments counter */
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char **nargv; /* New arguments pointers */
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register int i, j;
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int asize; /* argv array size */
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char *arg;
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char lib[256];
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_errnum = 0;
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nargc = 0; /* Initialise counter, size counter */
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asize = *argc; /* and new argument vector to the */
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/* current argv array size */
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if ((nargv = (char **) calloc((size_t) *argc, sizeof (void *))) != NULL) {
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/* For each initial argument */
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for (i = 0; i < *argc; i++) {
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arg = (*argv)[i];
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#ifdef DEBUG
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fprintf(stderr, "checking arg: %s", arg);
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#endif
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if (i == 0 || *arg == '-' || ! ismember(arg)) {
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/* if it begins with a dash or doesn't include
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* a library name simply add it to the new array */
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if (! (asize = allocarg(nargc, asize, &nargv, arg)))
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return 0; /* Not enough memory */
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nargc++;
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} else {
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short insert;
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strcpy(lib, libname(arg));
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/* add library name if necessary */
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for (j = 2, insert = 1; i < nargc; i++) {
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if (ismember(nargv[i])
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&& ! strcmp(lib, libname(nargv[i]))) {
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insert = 0;
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break;
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}
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}
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if (insert) {
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#ifdef DEBUG
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fprintf(stderr, "inserting lib %s ", lib);
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#endif
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if (! (asize = allocarg(nargc, asize, &nargv, lib)))
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return 0; /* Not enough memory */
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nargc++;
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}
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/* add file name */
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#ifdef DEBUG
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fprintf(stderr, "inserting file %s", arg);
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#endif
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if (! (asize = allocarg(nargc, asize, &nargv, arg)))
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return 0; /* Not enough memory */
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nargc++;
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}
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#ifdef DEBUG
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fprintf(stderr, "\n");
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#endif
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}
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/* Update caller's parameters */
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*argc = nargc;
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*argv = nargv;
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/* and sign on success */
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return nargc;
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}
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/* If it is not possible to allocate initial array, sign on error */
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_errnum = ENOMEM;
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return 0;
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}
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