diff options
Diffstat (limited to 'conv.c')
| -rw-r--r-- | conv.c | 180 |
1 files changed, 0 insertions, 180 deletions
@@ -1,180 +0,0 @@ -#include <sys/stat.h> -#include <sys/wait.h> -#include <errno.h> -#include <fcntl.h> -#include <stdio.h> -#include <string.h> -#include <unistd.h> - -static char *argv0; - - -static int -single(int argc, char *argv[]) -{ - char size[256], target[4096], source[4096]; - char *p; - ssize_t r; - int fd; - - p = strchr(argv[0], 'x'); - if (!p) - return 1; - *p = '\0'; - stpcpy(size, argv[0]); - *p = 'x'; - - p = &p[strcspn(p, "-/")]; - if (!p) - return 1; - p = stpcpy(stpcpy(source, "scalable"), p); - if (strcmp(&p[-4], ".png")) - return 1; - stpcpy(&p[-4], ".svg"); - - for (p = argv[0]; (p = strchr(p, '/')); p++) { - *p = '\0'; - if (mkdir(argv[0], 0777) && errno != EEXIST) { - fprintf(stderr, "%s: mkdir %s 0777: %s\n", argv0, argv[0], strerror(errno)); - return 1; - } - *p = '/'; - } - - r = readlink(source, target, sizeof(target) - 1); - if (r >= 0) - target[r] = 0; - if (r >= 0 && (r >= sizeof(target) - 1 || r < 4 || strcmp(&target[r - 4], ".svg"))) { - return 1; - } else if (r < 0 && errno == EINVAL) { - fd = open(argv[0], O_WRONLY | O_CREAT | O_TRUNC, 0666); - if (fd < 0) { - fprintf(stderr, "%s: open %s O_WRONLY|O_CREAT|O_TRUNC 0666: %s\n", argv0, argv[0], strerror(errno)); - return 1; - } - if (fd != STDOUT_FILENO) { - if (dup2(fd, STDOUT_FILENO) != STDOUT_FILENO) - fprintf(stderr, "%s: dup2 %i 1: %s\n", argv0, fd, strerror(errno)); - close(fd); - } - execlp("rsvg-convert", "rsvg-convert", "-w", size, "-h", size, "-f", "png", source, NULL); - fprintf(stderr, "%s: execvp rsvg-convert: %s\n", argv0, strerror(errno)); - return 1; - } else if (r < 0) { - fprintf(stderr, "%s: readlink %s: %s\n", argv0, source, strerror(errno)); - return 1; - } else { - stpcpy(&target[r - 4], ".png"); - if (symlink(target, argv[0])) { - if (errno == EEXIST) { - unlink(argv[0]); - if (!symlink(target, argv[0])) - return 0; - } - fprintf(stderr, "%s: symlink %s %s: %s\n", argv0, target, argv[0], strerror(errno)); - return 1; - } - return 0; - } -} - - -static int -multi(int argc, char *argv[]) -{ - char *source, output[4096], target[4096]; - char *p, *q; - pid_t pid; - int status, fd, i; - ssize_t r; - - source = *argv++, argc--; - - q = &source[strcspn(source, "-/")]; - if (!q) - return 1; - - for (i = 0; i < argc; i++) { - stpcpy(stpcpy(stpcpy(stpcpy(output, argv[i]), "x"), argv[i]), q); - for (p = output; (p = strchr(p, '/')); p++) { - *p = '\0'; - if (mkdir(output, 0777) && errno != EEXIST) { - fprintf(stderr, "%s: mkdir %s 0777: %s\n", argv0, output, strerror(errno)); - return 1; - } - *p = '/'; - } - } - - r = readlink(source, target, sizeof(target) - 1); - if (r >= 0) - target[r] = 0; - if (r >= 0 && (r >= sizeof(target) - 1 || r < 4 || strcmp(&target[r - 4], ".svg"))) { - return 1; - } else if (r < 0 && errno == EINVAL) { - p = stpcpy(stpcpy(stpcpy(stpcpy(output, argv[0]), "x"), argv[0]), q); - stpcpy(&p[-4], ".png"); - for (; *argv; argv++, argc--) { - pid = argc == 1 ? 0 : fork(); - if (pid == -1) { - fprintf(stderr, "%s: fork: %s\n", argv0, strerror(errno)); - return 1; - } - if (pid) { - p = stpcpy(stpcpy(stpcpy(stpcpy(output, argv[1]), "x"), argv[1]), q); - stpcpy(&p[-4], ".png"); - if (waitpid(pid, &status, 0) != pid) { - fprintf(stderr, "%s: waitpid rsvg-convert: %s\n", argv0, strerror(errno)); - return 1; - } - if (status) - return 1; - continue; - } - fd = open(output, O_WRONLY | O_CREAT | O_TRUNC, 0666); - if (fd < 0) { - fprintf(stderr, "%s: open %s O_WRONLY|O_CREAT|O_TRUNC 0666: %s\n", argv0, output, strerror(errno)); - return 1; - } - if (fd != STDOUT_FILENO) { - if (dup2(fd, STDOUT_FILENO) != STDOUT_FILENO) - fprintf(stderr, "%s: dup2 %i 1: %s\n", argv0, fd, strerror(errno)); - close(fd); - } - execlp("rsvg-convert", "rsvg-convert", "-w", *argv, "-h", *argv, "-f", "png", source, NULL); - fprintf(stderr, "%s: execvp rsvg-convert: %s\n", argv0, strerror(errno)); - return 1; - } - } else if (r < 0) { - fprintf(stderr, "%s: readlink %s: %s\n", argv0, source, strerror(errno)); - return 1; - } else { - stpcpy(&target[r - 4], ".png"); - for (; *argv; argv++) { - p = stpcpy(stpcpy(stpcpy(stpcpy(output, *argv), "x"), *argv), q); - stpcpy(&p[-4], ".png"); - if (symlink(target, output)) { - if (errno == EEXIST) { - unlink(output); - if (!symlink(target, output)) - continue; - } - fprintf(stderr, "%s: symlink %s %s: %s\n", argv0, target, output, strerror(errno)); - return 1; - } - } - return 0; - } -} - - -int -main(int argc, char *argv[]) -{ - argv0 = *argv++, argc--; - if (argc == 1) - return single(argc, argv); - if (argc > 1) - return multi(argc, argv); - return 1; -} |