Rev 3269 | Go to most recent revision | Details | Last modification | View Log | RSS feed
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| 3265 | post | 1 | /* Copyright (c) 2008, Tim Post <tinkertim@gmail.com> |
| 2 | * Copyright (C) 1998 by Wes Peters <wes@softweyr.com> |
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| 3 | * Copyright (c) 1988, 1993 The Regents of the University of California. |
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| 4 | * All rights reserved by all copyright holders. |
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| 5 | * |
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| 6 | * Redistribution and use in source and binary forms, with or without |
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| 7 | * modification, are permitted provided that the following conditions are met: |
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| 8 | * |
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| 9 | * Redistributions of source code must retain the above copyright notice, this |
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| 10 | * list of conditions and the following disclaimer. |
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| 11 | * |
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| 12 | * Redistributions in binary form must reproduce the above copyright notice, |
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| 13 | * this list of conditions and the following disclaimer in the documentation |
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| 14 | * and/or other materials provided with the distribution. |
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| 15 | * |
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| 16 | * Neither the name of the original program's authors nor the names of its |
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| 17 | * contributors may be used to endorse or promote products derived from this |
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| 18 | * software without specific prior written permission. |
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| 19 | * |
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| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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| 21 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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| 24 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 30 | * POSSIBILITY OF SUCH DAMAGE. |
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| 31 | */ |
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| 32 | |||
| 33 | /* NOTES: |
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| 34 | * 1 - Various functions were adapted from FreeBSD (copyright holders noted above) |
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| 35 | * these functions are identified with comments. |
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| 36 | * |
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| 37 | * 2 - Some of these have since appeared in libc. They remain here for various |
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| 38 | * reasons, such as the eventual integration of garbage collection for things |
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| 39 | * that allocate memory and don't automatically free it. |
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| 40 | * |
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| 41 | * 3 - Things that expect a pointer to an allocated string do _no_ sanity checking |
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| 42 | * if developing on a simulator with no debugger, take care :) |
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| 43 | */ |
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| 44 | |||
| 45 | #include <stdio.h> |
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| 46 | #include <string.h> |
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| 47 | #include <stdarg.h> |
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| 48 | #include <stdlib.h> |
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| 49 | |||
| 50 | #include "config.h" |
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| 51 | #include "errors.h" |
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| 52 | #include "util.h" |
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| 53 | |||
| 54 | /* Functions that just have no other home */ |
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| 55 | |||
| 56 | /* Tests if string is an --option/-option */ |
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| 57 | unsigned int is_option(char *string) |
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| 58 | { |
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| 59 | size_t i; |
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| 60 | |||
| 61 | /* We have rubbish */ |
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| 62 | if (NULL == string) |
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| 63 | return 0; |
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| 64 | |||
| 65 | /* - or -- means an option (or end of options) */ |
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| 66 | for (i=0; i < strlen(string); i++) { |
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| 67 | if (string[i] == '-' && i <= 1) |
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| 68 | return 1; |
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| 69 | } |
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| 70 | |||
| 71 | return 0; |
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| 72 | } |
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| 73 | |||
| 74 | /* Returns the option count in an array of arguments */ |
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| 75 | unsigned int count_options(char *argv[]) |
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| 76 | { |
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| 77 | unsigned int i; |
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| 78 | unsigned int n = 0; |
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| 79 | |||
| 80 | for (i=0; argv[i] != NULL; i++) { |
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| 81 | if (is_option((char *)argv[i])) |
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| 82 | n++; |
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| 83 | } |
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| 84 | |||
| 85 | return n; |
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| 86 | } |
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| 87 | |||
| 88 | /* some platforms do not have strdup, implement it here */ |
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| 89 | char * cli_strdup(const char *s1) |
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| 90 | { |
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| 91 | size_t len = strlen(s1) + 1; |
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| 92 | void *ret = malloc(len); |
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| 93 | |||
| 94 | if (ret == NULL) |
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| 95 | return (char *) NULL; |
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| 96 | |||
| 97 | return (char *) memcpy(ret, s1, len); |
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| 98 | } |
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| 99 | |||
| 100 | /* Ported from FBSD strtok.c 8.1 (Berkeley) 6/4/93 */ |
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| 101 | char * cli_strtok_r(char *s, const char *delim, char **last) |
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| 102 | { |
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| 103 | char *spanp, *tok; |
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| 104 | int c, sc; |
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| 105 | |||
| 106 | if (s == NULL && (s = *last) == NULL) |
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| 107 | return (NULL); |
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| 108 | |||
| 109 | cont: |
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| 110 | c = *s++; |
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| 111 | for (spanp = (char *)delim; (sc = *spanp++) != 0;) { |
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| 112 | if (c == sc) |
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| 113 | goto cont; |
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| 114 | } |
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| 115 | |||
| 116 | if (c == 0) { /* no non-delimiter characters */ |
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| 117 | *last = NULL; |
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| 118 | return (NULL); |
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| 119 | } |
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| 120 | tok = s - 1; |
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| 121 | |||
| 122 | for (;;) { |
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| 123 | c = *s++; |
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| 124 | spanp = (char *)delim; |
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| 125 | do { |
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| 126 | if ((sc = *spanp++) == c) { |
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| 127 | if (c == 0) |
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| 128 | s = NULL; |
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| 129 | else |
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| 130 | s[-1] = '\0'; |
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| 131 | *last = s; |
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| 132 | return (tok); |
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| 133 | } |
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| 134 | } while (sc != 0); |
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| 135 | } |
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| 136 | } |
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| 137 | |||
| 138 | /* Ported from FBSD strtok.c 8.1 (Berkeley) 6/4/93 */ |
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| 139 | char * cli_strtok(char *s, const char *delim) |
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| 140 | { |
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| 141 | static char *last; |
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| 142 | |||
| 143 | return (cli_strtok_r(s, delim, &last)); |
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| 144 | } |
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| 145 | |||
| 146 | /* for debugging, not really used */ |
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| 147 | void cli_free(void **pointer) |
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| 148 | { |
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| 149 | if (*pointer != NULL) { |
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| 150 | free(*pointer); |
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| 151 | *pointer = NULL; |
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| 152 | } |
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| 153 | } |
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| 154 |