The Android Open Source Project | 10e23ee | 2009-03-03 19:30:30 -0800 | [diff] [blame] | 1 | /** \ingroup popt |
| 2 | * \file popt/poptparse.c |
| 3 | */ |
| 4 | |
| 5 | /* (C) 1998-2002 Red Hat, Inc. -- Licensing details are in the COPYING |
| 6 | file accompanying popt source distributions, available from |
| 7 | ftp://ftp.rpm.org/pub/rpm/dist. */ |
| 8 | |
| 9 | #include "system.h" |
| 10 | |
| 11 | #define POPT_ARGV_ARRAY_GROW_DELTA 5 |
| 12 | |
| 13 | /*@-boundswrite@*/ |
| 14 | int poptDupArgv(int argc, const char **argv, |
| 15 | int * argcPtr, const char *** argvPtr) |
| 16 | { |
| 17 | size_t nb = (argc + 1) * sizeof(*argv); |
| 18 | const char ** argv2; |
| 19 | char * dst; |
| 20 | int i; |
| 21 | |
| 22 | if (argc <= 0 || argv == NULL) /* XXX can't happen */ |
| 23 | return POPT_ERROR_NOARG; |
| 24 | for (i = 0; i < argc; i++) { |
| 25 | if (argv[i] == NULL) |
| 26 | return POPT_ERROR_NOARG; |
| 27 | nb += strlen(argv[i]) + 1; |
| 28 | } |
| 29 | |
| 30 | dst = malloc(nb); |
| 31 | if (dst == NULL) /* XXX can't happen */ |
| 32 | return POPT_ERROR_MALLOC; |
| 33 | argv2 = (void *) dst; |
| 34 | dst += (argc + 1) * sizeof(*argv); |
| 35 | |
| 36 | /*@-branchstate@*/ |
| 37 | for (i = 0; i < argc; i++) { |
| 38 | argv2[i] = dst; |
| 39 | dst += strlen(strcpy(dst, argv[i])) + 1; |
| 40 | } |
| 41 | /*@=branchstate@*/ |
| 42 | argv2[argc] = NULL; |
| 43 | |
| 44 | if (argvPtr) { |
| 45 | *argvPtr = argv2; |
| 46 | } else { |
| 47 | free(argv2); |
| 48 | argv2 = NULL; |
| 49 | } |
| 50 | if (argcPtr) |
| 51 | *argcPtr = argc; |
| 52 | return 0; |
| 53 | } |
| 54 | /*@=boundswrite@*/ |
| 55 | |
| 56 | /*@-bounds@*/ |
| 57 | int poptParseArgvString(const char * s, int * argcPtr, const char *** argvPtr) |
| 58 | { |
| 59 | const char * src; |
| 60 | char quote = '\0'; |
| 61 | int argvAlloced = POPT_ARGV_ARRAY_GROW_DELTA; |
| 62 | const char ** argv = malloc(sizeof(*argv) * argvAlloced); |
| 63 | int argc = 0; |
| 64 | int buflen = strlen(s) + 1; |
| 65 | char * buf = memset(alloca(buflen), 0, buflen); |
| 66 | int rc = POPT_ERROR_MALLOC; |
| 67 | |
| 68 | if (argv == NULL) return rc; |
| 69 | argv[argc] = buf; |
| 70 | |
| 71 | for (src = s; *src != '\0'; src++) { |
| 72 | if (quote == *src) { |
| 73 | quote = '\0'; |
| 74 | } else if (quote != '\0') { |
| 75 | if (*src == '\\') { |
| 76 | src++; |
| 77 | if (!*src) { |
| 78 | rc = POPT_ERROR_BADQUOTE; |
| 79 | goto exit; |
| 80 | } |
| 81 | if (*src != quote) *buf++ = '\\'; |
| 82 | } |
| 83 | *buf++ = *src; |
| 84 | } else if (isspace(*src)) { |
| 85 | if (*argv[argc] != '\0') { |
| 86 | buf++, argc++; |
| 87 | if (argc == argvAlloced) { |
| 88 | argvAlloced += POPT_ARGV_ARRAY_GROW_DELTA; |
| 89 | argv = realloc(argv, sizeof(*argv) * argvAlloced); |
| 90 | if (argv == NULL) goto exit; |
| 91 | } |
| 92 | argv[argc] = buf; |
| 93 | } |
| 94 | } else switch (*src) { |
| 95 | case '"': |
| 96 | case '\'': |
| 97 | quote = *src; |
| 98 | /*@switchbreak@*/ break; |
| 99 | case '\\': |
| 100 | src++; |
| 101 | if (!*src) { |
| 102 | rc = POPT_ERROR_BADQUOTE; |
| 103 | goto exit; |
| 104 | } |
| 105 | /*@fallthrough@*/ |
| 106 | default: |
| 107 | *buf++ = *src; |
| 108 | /*@switchbreak@*/ break; |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | if (strlen(argv[argc])) { |
| 113 | argc++, buf++; |
| 114 | } |
| 115 | |
| 116 | rc = poptDupArgv(argc, argv, argcPtr, argvPtr); |
| 117 | |
| 118 | exit: |
| 119 | if (argv) free(argv); |
| 120 | return rc; |
| 121 | } |
| 122 | /*@=bounds@*/ |
| 123 | |
| 124 | /* still in the dev stage. |
| 125 | * return values, perhaps 1== file erro |
| 126 | * 2== line to long |
| 127 | * 3== umm.... more? |
| 128 | */ |
| 129 | int poptConfigFileToString(FILE *fp, char ** argstrp, /*@unused@*/ int flags) |
| 130 | { |
| 131 | char line[999]; |
| 132 | char * argstr; |
| 133 | char * p; |
| 134 | char * q; |
| 135 | char * x; |
| 136 | int t; |
| 137 | int argvlen = 0; |
| 138 | size_t maxlinelen = sizeof(line); |
| 139 | size_t linelen; |
| 140 | int maxargvlen = 480; |
| 141 | int linenum = 0; |
| 142 | |
| 143 | *argstrp = NULL; |
| 144 | |
| 145 | /* | this_is = our_line |
| 146 | * p q x |
| 147 | */ |
| 148 | |
| 149 | if (fp == NULL) |
| 150 | return POPT_ERROR_NULLARG; |
| 151 | |
| 152 | argstr = calloc(maxargvlen, sizeof(*argstr)); |
| 153 | if (argstr == NULL) return POPT_ERROR_MALLOC; |
| 154 | |
| 155 | while (fgets(line, (int)maxlinelen, fp) != NULL) { |
| 156 | linenum++; |
| 157 | p = line; |
| 158 | |
| 159 | /* loop until first non-space char or EOL */ |
| 160 | while( *p != '\0' && isspace(*p) ) |
| 161 | p++; |
| 162 | |
| 163 | linelen = strlen(p); |
| 164 | if (linelen >= maxlinelen-1) |
| 165 | return POPT_ERROR_OVERFLOW; /* XXX line too long */ |
| 166 | |
| 167 | if (*p == '\0' || *p == '\n') continue; /* line is empty */ |
| 168 | if (*p == '#') continue; /* comment line */ |
| 169 | |
| 170 | q = p; |
| 171 | |
| 172 | while (*q != '\0' && (!isspace(*q)) && *q != '=') |
| 173 | q++; |
| 174 | |
| 175 | if (isspace(*q)) { |
| 176 | /* a space after the name, find next non space */ |
| 177 | *q++='\0'; |
| 178 | while( *q != '\0' && isspace((int)*q) ) q++; |
| 179 | } |
| 180 | if (*q == '\0') { |
| 181 | /* single command line option (ie, no name=val, just name) */ |
| 182 | q[-1] = '\0'; /* kill off newline from fgets() call */ |
| 183 | argvlen += (t = q - p) + (sizeof(" --")-1); |
| 184 | if (argvlen >= maxargvlen) { |
| 185 | maxargvlen = (t > maxargvlen) ? t*2 : maxargvlen*2; |
| 186 | argstr = realloc(argstr, maxargvlen); |
| 187 | if (argstr == NULL) return POPT_ERROR_MALLOC; |
| 188 | } |
| 189 | strcat(argstr, " --"); |
| 190 | strcat(argstr, p); |
| 191 | continue; |
| 192 | } |
| 193 | if (*q != '=') |
| 194 | continue; /* XXX for now, silently ignore bogus line */ |
| 195 | |
| 196 | /* *q is an equal sign. */ |
| 197 | *q++ = '\0'; |
| 198 | |
| 199 | /* find next non-space letter of value */ |
| 200 | while (*q != '\0' && isspace(*q)) |
| 201 | q++; |
| 202 | if (*q == '\0') |
| 203 | continue; /* XXX silently ignore missing value */ |
| 204 | |
| 205 | /* now, loop and strip all ending whitespace */ |
| 206 | x = p + linelen; |
| 207 | while (isspace(*--x)) |
| 208 | *x = 0; /* null out last char if space (including fgets() NL) */ |
| 209 | |
| 210 | /* rest of line accept */ |
| 211 | t = x - p; |
| 212 | argvlen += t + (sizeof("' --='")-1); |
| 213 | if (argvlen >= maxargvlen) { |
| 214 | maxargvlen = (t > maxargvlen) ? t*2 : maxargvlen*2; |
| 215 | argstr = realloc(argstr, maxargvlen); |
| 216 | if (argstr == NULL) return POPT_ERROR_MALLOC; |
| 217 | } |
| 218 | strcat(argstr, " --"); |
| 219 | strcat(argstr, p); |
| 220 | strcat(argstr, "=\""); |
| 221 | strcat(argstr, q); |
| 222 | strcat(argstr, "\""); |
| 223 | } |
| 224 | |
| 225 | *argstrp = argstr; |
| 226 | return 0; |
| 227 | } |