| /* |
| * Copyright © 2013 Ran Benita <ran234@gmail.com> |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
| * DEALINGS IN THE SOFTWARE. |
| */ |
| |
| #include "config.h" |
| |
| #include "utils.h" |
| |
| #ifdef HAVE_MMAP |
| |
| #include <fcntl.h> |
| #include <unistd.h> |
| #include <sys/mman.h> |
| #include <sys/stat.h> |
| #include <sys/types.h> |
| |
| bool |
| map_file(FILE *file, char **string_out, size_t *size_out) |
| { |
| struct stat stat_buf; |
| int fd; |
| char *string; |
| |
| /* Make sure to keep the errno on failure! */ |
| fd = fileno(file); |
| if (fd < 0) |
| return false; |
| |
| if (fstat(fd, &stat_buf) != 0) |
| return false; |
| |
| string = mmap(NULL, stat_buf.st_size, PROT_READ, MAP_SHARED, fd, 0); |
| if (string == MAP_FAILED) |
| return false; |
| |
| *string_out = string; |
| *size_out = stat_buf.st_size; |
| return true; |
| } |
| |
| void |
| unmap_file(char *str, size_t size) |
| { |
| munmap(str, size); |
| } |
| |
| #else |
| |
| bool |
| map_file(FILE *file, char **string_out, size_t *size_out) |
| { |
| long ret; |
| size_t ret_s; |
| char *string; |
| size_t size; |
| |
| /* Make sure to keep the errno on failure! */ |
| |
| ret = fseek(file, 0, SEEK_END); |
| if (ret != 0) |
| return false; |
| |
| ret = ftell(file); |
| if (ret < 0) |
| return false; |
| size = (size_t) ret; |
| |
| ret = fseek(file, 0, SEEK_SET); |
| if (ret < 0) |
| return false; |
| |
| string = malloc(size); |
| if (!string) |
| return false; |
| |
| ret_s = fread(string, 1, size, file); |
| if (ret_s < size) { |
| free(string); |
| return false; |
| } |
| |
| *string_out = string; |
| *size_out = size; |
| return true; |
| } |
| |
| void |
| unmap_file(char *str, size_t size) |
| { |
| free(str); |
| } |
| |
| #endif |
| |
| // ASCII lower-case map. |
| static const unsigned char lower_map[] = { |
| 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, |
| 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, |
| 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, |
| 59, 60, 61, 62, 63, 64, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, |
| 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, |
| 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, |
| 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, |
| 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134, 135, 136, 137, |
| 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, |
| 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, |
| 168, 169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, |
| 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, 195, 196, 197, |
| 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, 208, 209, 210, 211, 212, |
| 213, 214, 215, 216, 217, 218, 219, 220, 221, 222, 223, 224, 225, 226, 227, |
| 228, 229, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 240, 241, 242, |
| 243, 244, 245, 246, 247, 248, 249, 250, 251, 252, 253, 254, 255 |
| }; |
| |
| // ASCII tolower (to avoid locale issues). |
| char |
| to_lower(char c) |
| { |
| return (char) lower_map[(unsigned char) c]; |
| } |
| |
| // ASCII strcasecmp (to avoid locale issues). |
| int |
| istrcmp(const char *a, const char *b) |
| { |
| for (size_t i = 0; ; i++) { |
| if (to_lower(a[i]) != to_lower(b[i])) |
| return (int) to_lower(a[i]) - (int) to_lower(b[i]); |
| if (!a[i]) |
| break; |
| } |
| return 0; |
| } |
| |
| // ASCII strncasecmp (to avoid locale issues). |
| int |
| istrncmp(const char *a, const char *b, size_t n) |
| { |
| for (size_t i = 0; i < n; i++) { |
| if (to_lower(a[i]) != to_lower(b[i])) |
| return (int) to_lower(a[i]) - (int) to_lower(b[i]); |
| if (!a[i]) |
| break; |
| } |
| return 0; |
| } |
| |
| #if !(defined(HAVE_ASPRINTF) && HAVE_ASPRINTF) |
| int |
| asprintf(char **strp, const char *fmt, ...) |
| { |
| int ret; |
| va_list ap; |
| va_start(ap, fmt); |
| ret = vasprintf(strp, fmt, ap); |
| va_end(ap); |
| return ret; |
| } |
| |
| # if !(defined(HAVE_VASPRINTF) && HAVE_VASPRINTF) |
| int |
| vasprintf(char **strp, const char *fmt, va_list ap) |
| { |
| int ret; |
| char *buf; |
| va_list ap_copy; |
| |
| /* |
| * The value of the va_list parameter is undefined after the call to |
| * vsnprintf() returns: pass a copy to make sure "ap" remains valid. |
| */ |
| va_copy(ap_copy, ap); |
| ret = vsnprintf(NULL, 0, fmt, ap_copy); |
| va_end(ap_copy); |
| |
| if (ret < 0) |
| return ret; |
| |
| if (!(buf = malloc(ret + 1))) |
| return -1; |
| |
| if ((ret = vsnprintf(buf, ret + 1, fmt, ap)) < 0) { |
| free(buf); |
| return ret; |
| } |
| |
| *strp = buf; |
| return ret; |
| } |
| # endif /* !HAVE_VASPRINTF */ |
| #endif /* !HAVE_ASPRINTF */ |