diff options
Diffstat (limited to 'usr.bin/diff/diff.c')
| -rw-r--r-- | usr.bin/diff/diff.c | 50 |
1 files changed, 42 insertions, 8 deletions
diff --git a/usr.bin/diff/diff.c b/usr.bin/diff/diff.c index d947c1e01705..15ebbca28bd7 100644 --- a/usr.bin/diff/diff.c +++ b/usr.bin/diff/diff.c @@ -20,7 +20,6 @@ * Materiel Command, USAF, under agreement number F39502-99-1-0512. */ -#include <sys/cdefs.h> #include <sys/stat.h> #include <ctype.h> @@ -36,11 +35,12 @@ #include "diff.h" #include "xmalloc.h" -static const char diff_version[] = "FreeBSD diff 20220309"; +static const char diff_version[] = "FreeBSD diff 20240307"; bool lflag, Nflag, Pflag, rflag, sflag, Tflag, cflag; bool ignore_file_case, suppress_common, color, noderef; static bool help = false; -int diff_format, diff_context, status; +int diff_format, diff_context, diff_algorithm, status; +bool diff_algorithm_set; int tabsize = 8, width = 130; static int colorflag = COLORFLAG_NEVER; char *start, *ifdefname, *diffargs, *label[2]; @@ -51,7 +51,17 @@ struct stat stb1, stb2; struct excludes *excludes_list; regex_t ignore_re, most_recent_re; -#define OPTIONS "0123456789aBbC:cdD:efF:HhI:iL:lnNPpqrS:sTtU:uwW:X:x:y" +static struct algorithm { + const char *name; + int id; +} algorithms[] = { + {"stone", D_DIFFSTONE}, + {"myers", D_DIFFMYERS}, + {"patience", D_DIFFPATIENCE}, + {NULL, D_DIFFNONE} +}; + +#define OPTIONS "0123456789A:aBbC:cdD:efF:HhI:iL:lnNPpqrS:sTtU:uwW:X:x:y" enum { OPT_TSIZE = CHAR_MAX + 1, OPT_STRIPCR, @@ -68,6 +78,7 @@ enum { }; static struct option longopts[] = { + { "algorithm", required_argument, 0, 'A' }, { "text", no_argument, 0, 'a' }, { "ignore-space-change", no_argument, 0, 'b' }, { "context", optional_argument, 0, 'C' }, @@ -139,6 +150,8 @@ main(int argc, char **argv) newarg = 1; diff_context = 3; diff_format = D_UNSET; + diff_algorithm = D_DIFFMYERS; + diff_algorithm_set = false; #define FORMAT_MISMATCHED(type) \ (diff_format != D_UNSET && diff_format != (type)) while ((ch = getopt_long(argc, argv, OPTIONS, longopts, NULL)) != -1) { @@ -153,6 +166,21 @@ main(int argc, char **argv) usage(); diff_context = (diff_context * 10) + (ch - '0'); break; + case 'A': + diff_algorithm = D_DIFFNONE; + for (struct algorithm *a = algorithms; a->name;a++) { + if(strcasecmp(optarg, a->name) == 0) { + diff_algorithm = a->id; + diff_algorithm_set = true; + break; + } + } + + if (diff_algorithm == D_DIFFNONE) { + printf("unknown algorithm: %s\n", optarg); + usage(); + } + break; case 'a': dflags |= D_FORCEASCII; break; @@ -276,8 +304,10 @@ main(int argc, char **argv) break; case 'W': width = (int) strtonum(optarg, 1, INT_MAX, &errstr); - if (errstr) - errx(1, "width is %s: %s", errstr, optarg); + if (errstr) { + warnx("Invalid argument for width"); + usage(); + } break; case 'X': read_excludes_file(optarg); @@ -315,8 +345,10 @@ main(int argc, char **argv) break; case OPT_TSIZE: tabsize = (int) strtonum(optarg, 1, INT_MAX, &errstr); - if (errstr) - errx(1, "tabsize is %s: %s", errstr, optarg); + if (errstr) { + warnx("Invalid argument for tabsize"); + usage(); + } break; case OPT_STRIPCR: dflags |= D_STRIPCR; @@ -437,6 +469,8 @@ main(int argc, char **argv) print_status(diffreg(argv[0], argv[1], dflags, 1), argv[0], argv[1], ""); } + if (fflush(stdout) != 0) + err(2, "stdout"); exit(status); } |