diff options
Diffstat (limited to 'tools/perf/util/strbuf.c')
| -rw-r--r-- | tools/perf/util/strbuf.c | 229 |
1 files changed, 1 insertions, 228 deletions
diff --git a/tools/perf/util/strbuf.c b/tools/perf/util/strbuf.c index 5249d5a1b0c2..92e068517c1a 100644 --- a/tools/perf/util/strbuf.c +++ b/tools/perf/util/strbuf.c | |||
| @@ -41,16 +41,6 @@ char *strbuf_detach(struct strbuf *sb, size_t *sz) | |||
| 41 | return res; | 41 | return res; |
| 42 | } | 42 | } |
| 43 | 43 | ||
| 44 | void strbuf_attach(struct strbuf *sb, void *buf, size_t len, size_t alloc) | ||
| 45 | { | ||
| 46 | strbuf_release(sb); | ||
| 47 | sb->buf = buf; | ||
| 48 | sb->len = len; | ||
| 49 | sb->alloc = alloc; | ||
| 50 | strbuf_grow(sb, 0); | ||
| 51 | sb->buf[sb->len] = '\0'; | ||
| 52 | } | ||
| 53 | |||
| 54 | void strbuf_grow(struct strbuf *sb, size_t extra) | 44 | void strbuf_grow(struct strbuf *sb, size_t extra) |
| 55 | { | 45 | { |
| 56 | if (sb->len + extra + 1 <= sb->len) | 46 | if (sb->len + extra + 1 <= sb->len) |
| @@ -60,94 +50,7 @@ void strbuf_grow(struct strbuf *sb, size_t extra) | |||
| 60 | ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc); | 50 | ALLOC_GROW(sb->buf, sb->len + extra + 1, sb->alloc); |
| 61 | } | 51 | } |
| 62 | 52 | ||
| 63 | void strbuf_trim(struct strbuf *sb) | 53 | static void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, |
| 64 | { | ||
| 65 | char *b = sb->buf; | ||
| 66 | while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1])) | ||
| 67 | sb->len--; | ||
| 68 | while (sb->len > 0 && isspace(*b)) { | ||
| 69 | b++; | ||
| 70 | sb->len--; | ||
| 71 | } | ||
| 72 | memmove(sb->buf, b, sb->len); | ||
| 73 | sb->buf[sb->len] = '\0'; | ||
| 74 | } | ||
| 75 | void strbuf_rtrim(struct strbuf *sb) | ||
| 76 | { | ||
| 77 | while (sb->len > 0 && isspace((unsigned char)sb->buf[sb->len - 1])) | ||
| 78 | sb->len--; | ||
| 79 | sb->buf[sb->len] = '\0'; | ||
| 80 | } | ||
| 81 | |||
| 82 | void strbuf_ltrim(struct strbuf *sb) | ||
| 83 | { | ||
| 84 | char *b = sb->buf; | ||
| 85 | while (sb->len > 0 && isspace(*b)) { | ||
| 86 | b++; | ||
| 87 | sb->len--; | ||
| 88 | } | ||
| 89 | memmove(sb->buf, b, sb->len); | ||
| 90 | sb->buf[sb->len] = '\0'; | ||
| 91 | } | ||
| 92 | |||
| 93 | void strbuf_tolower(struct strbuf *sb) | ||
| 94 | { | ||
| 95 | unsigned int i; | ||
| 96 | |||
| 97 | for (i = 0; i < sb->len; i++) | ||
| 98 | sb->buf[i] = tolower(sb->buf[i]); | ||
| 99 | } | ||
| 100 | |||
| 101 | struct strbuf **strbuf_split(const struct strbuf *sb, int delim) | ||
| 102 | { | ||
| 103 | int alloc = 2, pos = 0; | ||
| 104 | char *n, *p; | ||
| 105 | struct strbuf **ret; | ||
| 106 | struct strbuf *t; | ||
| 107 | |||
| 108 | ret = calloc(alloc, sizeof(struct strbuf *)); | ||
| 109 | p = n = sb->buf; | ||
| 110 | while (n < sb->buf + sb->len) { | ||
| 111 | int len; | ||
| 112 | n = memchr(n, delim, sb->len - (n - sb->buf)); | ||
| 113 | if (pos + 1 >= alloc) { | ||
| 114 | alloc = alloc * 2; | ||
| 115 | ret = realloc(ret, sizeof(struct strbuf *) * alloc); | ||
| 116 | } | ||
| 117 | if (!n) | ||
| 118 | n = sb->buf + sb->len - 1; | ||
| 119 | len = n - p + 1; | ||
| 120 | t = malloc(sizeof(struct strbuf)); | ||
| 121 | strbuf_init(t, len); | ||
| 122 | strbuf_add(t, p, len); | ||
| 123 | ret[pos] = t; | ||
| 124 | ret[++pos] = NULL; | ||
| 125 | p = ++n; | ||
| 126 | } | ||
| 127 | return ret; | ||
| 128 | } | ||
| 129 | |||
| 130 | void strbuf_list_free(struct strbuf **sbs) | ||
| 131 | { | ||
| 132 | struct strbuf **s = sbs; | ||
| 133 | |||
| 134 | while (*s) { | ||
| 135 | strbuf_release(*s); | ||
| 136 | free(*s++); | ||
| 137 | } | ||
| 138 | free(sbs); | ||
| 139 | } | ||
| 140 | |||
| 141 | int strbuf_cmp(const struct strbuf *a, const struct strbuf *b) | ||
| 142 | { | ||
| 143 | int len = a->len < b->len ? a->len: b->len; | ||
| 144 | int cmp = memcmp(a->buf, b->buf, len); | ||
| 145 | if (cmp) | ||
| 146 | return cmp; | ||
| 147 | return a->len < b->len ? -1: a->len != b->len; | ||
| 148 | } | ||
| 149 | |||
| 150 | void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, | ||
| 151 | const void *data, size_t dlen) | 54 | const void *data, size_t dlen) |
| 152 | { | 55 | { |
| 153 | if (pos + len < pos) | 56 | if (pos + len < pos) |
| @@ -166,11 +69,6 @@ void strbuf_splice(struct strbuf *sb, size_t pos, size_t len, | |||
| 166 | strbuf_setlen(sb, sb->len + dlen - len); | 69 | strbuf_setlen(sb, sb->len + dlen - len); |
| 167 | } | 70 | } |
| 168 | 71 | ||
| 169 | void strbuf_insert(struct strbuf *sb, size_t pos, const void *data, size_t len) | ||
| 170 | { | ||
| 171 | strbuf_splice(sb, pos, 0, data, len); | ||
| 172 | } | ||
| 173 | |||
| 174 | void strbuf_remove(struct strbuf *sb, size_t pos, size_t len) | 72 | void strbuf_remove(struct strbuf *sb, size_t pos, size_t len) |
| 175 | { | 73 | { |
| 176 | strbuf_splice(sb, pos, len, NULL, 0); | 74 | strbuf_splice(sb, pos, len, NULL, 0); |
| @@ -183,13 +81,6 @@ void strbuf_add(struct strbuf *sb, const void *data, size_t len) | |||
| 183 | strbuf_setlen(sb, sb->len + len); | 81 | strbuf_setlen(sb, sb->len + len); |
| 184 | } | 82 | } |
| 185 | 83 | ||
| 186 | void strbuf_adddup(struct strbuf *sb, size_t pos, size_t len) | ||
| 187 | { | ||
| 188 | strbuf_grow(sb, len); | ||
| 189 | memcpy(sb->buf + sb->len, sb->buf + pos, len); | ||
| 190 | strbuf_setlen(sb, sb->len + len); | ||
| 191 | } | ||
| 192 | |||
| 193 | void strbuf_addf(struct strbuf *sb, const char *fmt, ...) | 84 | void strbuf_addf(struct strbuf *sb, const char *fmt, ...) |
| 194 | { | 85 | { |
| 195 | int len; | 86 | int len; |
| @@ -214,57 +105,6 @@ void strbuf_addf(struct strbuf *sb, const char *fmt, ...) | |||
| 214 | strbuf_setlen(sb, sb->len + len); | 105 | strbuf_setlen(sb, sb->len + len); |
| 215 | } | 106 | } |
| 216 | 107 | ||
| 217 | void strbuf_expand(struct strbuf *sb, const char *format, expand_fn_t fn, | ||
| 218 | void *context) | ||
| 219 | { | ||
| 220 | for (;;) { | ||
| 221 | const char *percent; | ||
| 222 | size_t consumed; | ||
| 223 | |||
| 224 | percent = strchrnul(format, '%'); | ||
| 225 | strbuf_add(sb, format, percent - format); | ||
| 226 | if (!*percent) | ||
| 227 | break; | ||
| 228 | format = percent + 1; | ||
| 229 | |||
| 230 | consumed = fn(sb, format, context); | ||
| 231 | if (consumed) | ||
| 232 | format += consumed; | ||
| 233 | else | ||
| 234 | strbuf_addch(sb, '%'); | ||
| 235 | } | ||
| 236 | } | ||
| 237 | |||
| 238 | size_t strbuf_expand_dict_cb(struct strbuf *sb, const char *placeholder, | ||
| 239 | void *context) | ||
| 240 | { | ||
| 241 | struct strbuf_expand_dict_entry *e = context; | ||
| 242 | size_t len; | ||
| 243 | |||
| 244 | for (; e->placeholder && (len = strlen(e->placeholder)); e++) { | ||
| 245 | if (!strncmp(placeholder, e->placeholder, len)) { | ||
| 246 | if (e->value) | ||
| 247 | strbuf_addstr(sb, e->value); | ||
| 248 | return len; | ||
| 249 | } | ||
| 250 | } | ||
| 251 | return 0; | ||
| 252 | } | ||
| 253 | |||
| 254 | size_t strbuf_fread(struct strbuf *sb, size_t size, FILE *f) | ||
| 255 | { | ||
| 256 | size_t res; | ||
| 257 | size_t oldalloc = sb->alloc; | ||
| 258 | |||
| 259 | strbuf_grow(sb, size); | ||
| 260 | res = fread(sb->buf + sb->len, 1, size, f); | ||
| 261 | if (res > 0) | ||
| 262 | strbuf_setlen(sb, sb->len + res); | ||
| 263 | else if (oldalloc == 0) | ||
| 264 | strbuf_release(sb); | ||
| 265 | return res; | ||
| 266 | } | ||
| 267 | |||
| 268 | ssize_t strbuf_read(struct strbuf *sb, int fd, ssize_t hint) | 108 | ssize_t strbuf_read(struct strbuf *sb, int fd, ssize_t hint) |
| 269 | { | 109 | { |
| 270 | size_t oldlen = sb->len; | 110 | size_t oldlen = sb->len; |
| @@ -291,70 +131,3 @@ ssize_t strbuf_read(struct strbuf *sb, int fd, ssize_t hint) | |||
| 291 | sb->buf[sb->len] = '\0'; | 131 | sb->buf[sb->len] = '\0'; |
| 292 | return sb->len - oldlen; | 132 | return sb->len - oldlen; |
| 293 | } | 133 | } |
| 294 | |||
| 295 | #define STRBUF_MAXLINK (2*PATH_MAX) | ||
| 296 | |||
| 297 | int strbuf_readlink(struct strbuf *sb, const char *path, ssize_t hint) | ||
| 298 | { | ||
| 299 | size_t oldalloc = sb->alloc; | ||
| 300 | |||
| 301 | if (hint < 32) | ||
| 302 | hint = 32; | ||
| 303 | |||
| 304 | while (hint < STRBUF_MAXLINK) { | ||
| 305 | ssize_t len; | ||
| 306 | |||
| 307 | strbuf_grow(sb, hint); | ||
| 308 | len = readlink(path, sb->buf, hint); | ||
| 309 | if (len < 0) { | ||
| 310 | if (errno != ERANGE) | ||
| 311 | break; | ||
| 312 | } else if (len < hint) { | ||
| 313 | strbuf_setlen(sb, len); | ||
| 314 | return 0; | ||
| 315 | } | ||
| 316 | |||
| 317 | /* .. the buffer was too small - try again */ | ||
| 318 | hint *= 2; | ||
| 319 | } | ||
| 320 | if (oldalloc == 0) | ||
| 321 | strbuf_release(sb); | ||
| 322 | return -1; | ||
| 323 | } | ||
| 324 | |||
| 325 | int strbuf_getline(struct strbuf *sb, FILE *fp, int term) | ||
| 326 | { | ||
| 327 | int ch; | ||
| 328 | |||
| 329 | strbuf_grow(sb, 0); | ||
| 330 | if (feof(fp)) | ||
| 331 | return EOF; | ||
| 332 | |||
| 333 | strbuf_reset(sb); | ||
| 334 | while ((ch = fgetc(fp)) != EOF) { | ||
| 335 | if (ch == term) | ||
| 336 | break; | ||
| 337 | strbuf_grow(sb, 1); | ||
| 338 | sb->buf[sb->len++] = ch; | ||
| 339 | } | ||
| 340 | if (ch == EOF && sb->len == 0) | ||
| 341 | return EOF; | ||
| 342 | |||
| 343 | sb->buf[sb->len] = '\0'; | ||
| 344 | return 0; | ||
| 345 | } | ||
| 346 | |||
| 347 | int strbuf_read_file(struct strbuf *sb, const char *path, ssize_t hint) | ||
| 348 | { | ||
| 349 | int fd, len; | ||
| 350 | |||
| 351 | fd = open(path, O_RDONLY); | ||
| 352 | if (fd < 0) | ||
| 353 | return -1; | ||
| 354 | len = strbuf_read(sb, fd, hint); | ||
| 355 | close(fd); | ||
| 356 | if (len < 0) | ||
| 357 | return -1; | ||
| 358 | |||
| 359 | return len; | ||
| 360 | } | ||
