diff options
Diffstat (limited to 'diff.c')
| -rw-r--r-- | diff.c | 58 |
1 files changed, 43 insertions, 15 deletions
@@ -1771,8 +1771,14 @@ static void emit_binary_diff(FILE *file, mmfile_t *one, mmfile_t *two, char *pre static void diff_filespec_load_driver(struct diff_filespec *one) { - if (!one->driver) + /* Use already-loaded driver */ + if (one->driver) + return; + + if (S_ISREG(one->mode)) one->driver = userdiff_find_by_path(one->path); + + /* Fallback to default settings */ if (!one->driver) one->driver = userdiff_find_by_name("default"); } @@ -1820,8 +1826,7 @@ struct userdiff_driver *get_textconv(struct diff_filespec *one) { if (!DIFF_FILE_VALID(one)) return NULL; - if (!S_ISREG(one->mode)) - return NULL; + diff_filespec_load_driver(one); if (!one->driver->textconv) return NULL; @@ -2153,7 +2158,7 @@ static void builtin_checkdiff(const char *name_a, const char *name_b, ecbdata.ws_rule = data.ws_rule; check_blank_at_eof(&mf1, &mf2, &ecbdata); - blank_at_eof = ecbdata.blank_at_eof_in_preimage; + blank_at_eof = ecbdata.blank_at_eof_in_postimage; if (blank_at_eof) { static char *err; @@ -2386,10 +2391,14 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only) } else { enum object_type type; - if (size_only) + if (size_only) { type = sha1_object_info(s->sha1, &s->size); - else { + if (type < 0) + die("unable to read %s", sha1_to_hex(s->sha1)); + } else { s->data = read_sha1_file(s->sha1, &type, &s->size); + if (!s->data) + die("unable to read %s", sha1_to_hex(s->sha1)); s->should_free = 1; } } @@ -3140,16 +3149,19 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) return stat_opt(options, av); /* renames options */ - else if (!prefixcmp(arg, "-B")) { + else if (!prefixcmp(arg, "-B") || !prefixcmp(arg, "--break-rewrites=") || + !strcmp(arg, "--break-rewrites")) { if ((options->break_opt = diff_scoreopt_parse(arg)) == -1) return error("invalid argument to -B: %s", arg+2); } - else if (!prefixcmp(arg, "-M")) { + else if (!prefixcmp(arg, "-M") || !prefixcmp(arg, "--detect-renames=") || + !strcmp(arg, "--detect-renames")) { if ((options->rename_score = diff_scoreopt_parse(arg)) == -1) return error("invalid argument to -M: %s", arg+2); options->detect_rename = DIFF_DETECT_RENAME; } - else if (!prefixcmp(arg, "-C")) { + else if (!prefixcmp(arg, "-C") || !prefixcmp(arg, "--detect-copies=") || + !strcmp(arg, "--detect-copies")) { if (options->detect_rename == DIFF_DETECT_COPY) DIFF_OPT_SET(options, FIND_COPIES_HARDER); if ((options->rename_score = diff_scoreopt_parse(arg)) == -1) @@ -3323,7 +3335,7 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) return 1; } -static int parse_num(const char **cp_p) +int parse_rename_score(const char **cp_p) { unsigned long num, scale; int ch, dot; @@ -3366,10 +3378,26 @@ static int diff_scoreopt_parse(const char *opt) if (*opt++ != '-') return -1; cmd = *opt++; + if (cmd == '-') { + /* convert the long-form arguments into short-form versions */ + if (!prefixcmp(opt, "break-rewrites")) { + opt += strlen("break-rewrites"); + if (*opt == 0 || *opt++ == '=') + cmd = 'B'; + } else if (!prefixcmp(opt, "detect-copies")) { + opt += strlen("detect-copies"); + if (*opt == 0 || *opt++ == '=') + cmd = 'C'; + } else if (!prefixcmp(opt, "detect-renames")) { + opt += strlen("detect-renames"); + if (*opt == 0 || *opt++ == '=') + cmd = 'M'; + } + } if (cmd != 'M' && cmd != 'C' && cmd != 'B') return -1; /* that is not a -M, -C nor -B option */ - opt1 = parse_num(&opt); + opt1 = parse_rename_score(&opt); if (cmd != 'B') opt2 = 0; else { @@ -3379,7 +3407,7 @@ static int diff_scoreopt_parse(const char *opt) return -1; /* we expect -B80/99 or -B80 */ else { opt++; - opt2 = parse_num(&opt); + opt2 = parse_rename_score(&opt); } } if (*opt != 0) @@ -3532,7 +3560,7 @@ static void diff_flush_stat(struct diff_filepair *p, struct diff_options *o, if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) - return; /* no tree diffs in patch format */ + return; /* no useful stat for tree diffs */ run_diffstat(p, o, diffstat); } @@ -3545,7 +3573,7 @@ static void diff_flush_checkdiff(struct diff_filepair *p, if ((DIFF_FILE_VALID(p->one) && S_ISDIR(p->one->mode)) || (DIFF_FILE_VALID(p->two) && S_ISDIR(p->two->mode))) - return; /* no tree diffs in patch format */ + return; /* nothing to check in tree diffs */ run_checkdiff(p, o); } @@ -3870,7 +3898,7 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1) xpp.flags = 0; xecfg.ctxlen = 3; - xecfg.flags = XDL_EMIT_FUNCNAMES; + xecfg.flags = 0; xdi_diff_outf(&mf1, &mf2, patch_id_consume, &data, &xpp, &xecfg); } |