diff options
Diffstat (limited to 'libshouldbeinlibc/=argz.c')
| -rw-r--r-- | libshouldbeinlibc/=argz.c | 190 |
1 files changed, 0 insertions, 190 deletions
diff --git a/libshouldbeinlibc/=argz.c b/libshouldbeinlibc/=argz.c deleted file mode 100644 index fd90a1e2..00000000 --- a/libshouldbeinlibc/=argz.c +++ /dev/null @@ -1,190 +0,0 @@ -/* Routines for dealing with '\0' separated arg vectors. - - Copyright (C) 1995 Free Software Foundation, Inc. - - Written by Miles Bader <miles@gnu.ai.mit.edu> - - This program is free software; you can redistribute it and/or - modify it under the terms of the GNU General Public License as - published by the Free Software Foundation; either version 2, or (at - your option) any later version. - - This program is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ - -#include <stdlib.h> -#include <string.h> -#include <errno.h> - -/* ---------------------------------------------------------------- */ - -/* Make a '\0' separated arg vector from a unix argv vector, returning it in - ARGZ, and the total length in LEN. If a memory allocation error occurs, - ENOMEM is returned, otherwise 0. */ -error_t -argz_create(char **argv, char **argz, int *len) -{ - int tlen = 0; - char **argp; - - for (argp = argv; *argp != NULL; argp++) - tlen += strlen(*argp) + 1; - - *len = tlen; - - if (tlen == 0) - *argz = NULL; - else - { - *argz = malloc(tlen); - if (*argz == NULL) - return ENOMEM; - - while (tlen > 0) - { - tlen -= strlen(*--argp) + 1; - strcpy(*argz + tlen, *argp); - } - } - - return 0; -} - -/* ---------------------------------------------------------------- */ - -/* Returns the number of strings in ARGZ. */ -int -argz_count (char *argz, int len) -{ - int count = 0; - while (len > 0) - { - int part_len = strlen(argz); - argz += part_len + 1; - len -= part_len + 1; - count++; - } - return count; -} - -/* ---------------------------------------------------------------- */ - -/* Puts pointers to each string in ARGZ into ARGV, which must be large enough - to hold them all. */ -void -argz_extract (char *argz, int len, char **argv) -{ - while (len > 0) - { - int part_len = strlen(argz); - *argv++ = argz; - argz += part_len + 1; - len -= part_len + 1; - } -} - -/* ---------------------------------------------------------------- */ - -/* Make '\0' separated arg vector ARGZ printable by converting all the '\0's - except the last into the character SEP. */ -void -argz_stringify(char *argz, int len, int sep) -{ - while (len > 0) - { - int part_len = strlen(argz); - argz += part_len; - len -= part_len + 1; - if (len > 0) - *argz++ = sep; - } -} - -/* Add BUF, of length BUF_LEN to the argz vector in ARGZ & ARGZ_LEN. */ -error_t -argz_append (char **argz, unsigned *argz_len, char *buf, unsigned buf_len) -{ - unsigned new_argz_len = *argz_len + buf_len; - char *new_argz = realloc (*argz, new_argz_len); - if (new_argz) - { - bcopy (buf, new_argz + *argz_len, buf_len); - *argz = new_argz; - *argz_len = new_argz_len; - return 0; - } - else - return ENOMEM; -} - -/* Add STR to the argz vector in ARGZ & ARGZ_LEN. This should be moved into - argz.c in libshouldbelibc. */ -error_t -argz_add (char **argz, unsigned *argz_len, char *str) -{ - return argz_append (argz, argz_len, str, strlen (str) + 1); -} - -/* Delete ENTRY from ARGZ & ARGZ_LEN, if any. */ -void -argz_delete (char **argz, unsigned *argz_len, char *entry) -{ - if (entry) - /* Get rid of the old value for NAME. */ - { - unsigned entry_len = strlen (entry) + 1; - *argz_len -= entry_len; - bcopy (entry + entry_len, entry, *argz_len - (entry - *argz)); - if (*argz_len == 0) - { - free (*argz); - *argz = 0; - } - } -} - -/* Insert ENTRY into ARGZ & ARGZ_LEN before BEFORE, which should be an - existing entry in ARGZ; if BEFORE is NULL, ENTRY is appended to the end. - Since ARGZ's first entry is the same as ARGZ, argz_insert (ARGZ, ARGZ_LEN, - ARGZ, ENTRY) will insert ENTRY at the beginning of ARGZ. If BEFORE is not - in ARGZ, EINVAL is returned, else if memory can't be allocated for the new - ARGZ, ENOMEM is returned, else 0. */ -error_t -argz_insert (char **argz, unsigned *argz_len, char *before, char *entry) -{ - if (! before) - return argz_add (argz, argz_len, entry); - - if (before < *argz || before >= *argz + *argz_len) - return EINVAL; - - if (before > *argz) - /* Make sure before is actually the beginning of an entry. */ - while (before[-1]) - before--; - - { - unsigned after_before = *argz_len - (before - *argz); - unsigned entry_len = strlen (entry) + 1; - unsigned new_argz_len = *argz_len + entry_len; - char *new_argz = realloc (*argz, new_argz_len); - - if (new_argz) - { - before = new_argz + (before - *argz); - bcopy (before, before + entry_len, after_before); - bcopy (entry, before, entry_len); - *argz = new_argz; - *argz_len = new_argz_len; - return 0; - } - else - return ENOMEM; - } -} |