builtin-fmt.c

   1 /*
   2  * GIT - The information manager from hell
   3  */
   4
   5 #include "cache.h"
   6 #include "refs.h"
   7 #include "builtin.h"
   8 #include "utf8.h"
   9
  10 static const char *fmt_usage = "git-fmt [--width <columns>] [<files>...]";
  11
  12 static int fmt_from_fd(int fd, int width)
  13 {
  14         int indent = 0;
  15         char buffer[1024];
  16         for (;;) {
  17                 int ret = xread(fd, buffer, sizeof(buffer) - 1);
  18                 if (ret <= 0) {
  19                         putchar('\n');
  20                         return ret;
  21                 }
  22                 buffer[ret] = '\0';
  23                 indent = print_wrapped_text(buffer, -indent, 0, width);
  24         }
  25 }
  26
  27 int cmd_fmt(int argc, const char **argv, const char *prefix)
  28 {
  29         int width = 76;
  30
  31         if (argc > 2 && (!strcmp(argv[1], "--width")
  32                                 || !strcmp(argv[1], "-w"))) {
  33                 width = atoi(argv[2]);
  34                 argc -= 2;
  35                 argv += 2;
  36         }
  37
  38         if (argc == 1)
  39                 return fmt_from_fd(0, width);
  40         else {
  41                 int i, ret = 0;
  42                 if (!strcmp(argv[1], "-h"))
  43                         usage(fmt_usage);
  44                 for (i = 1; i < argc && ret; i++) {
  45                         int fd = open(argv[i], O_RDONLY);
  46                         if (fd < 0) {
  47                                 warning ("Error reading %s: %s", argv[i],
  48                                         strerror(errno));
  49                                 continue;
  50                         }
  51                         ret |= fmt_from_fd(fd, width);
  52                         close(fd);
  53                 }
  54                 return ret;
  55         }
  56 }