diff options
Diffstat (limited to 'diff.c')
| -rw-r--r-- | diff.c | 154 |
1 files changed, 100 insertions, 54 deletions
@@ -20,9 +20,11 @@ static int diff_detect_rename_default; static int diff_rename_limit_default = 200; +static int diff_suppress_blank_empty; int diff_use_color_default = -1; static const char *external_diff_cmd_cfg; int diff_auto_refresh_index = 1; +static int diff_mnemonic_prefix; static char diff_colors[][COLOR_MAXLEN] = { "\033[m", /* reset */ @@ -154,6 +156,10 @@ int git_diff_ui_config(const char *var, const char *value, void *cb) diff_auto_refresh_index = git_config_bool(var, value); return 0; } + if (!strcmp(var, "diff.mnemonicprefix")) { + diff_mnemonic_prefix = git_config_bool(var, value); + return 0; + } if (!strcmp(var, "diff.external")) return git_config_string(&external_diff_cmd_cfg, var, value); if (!prefixcmp(var, "diff.")) { @@ -181,6 +187,12 @@ int git_diff_basic_config(const char *var, const char *value, void *cb) return 0; } + /* like GNU diff's --suppress-blank-empty option */ + if (!strcmp(var, "diff.suppress-blank-empty")) { + diff_suppress_blank_empty = git_config_bool(var, value); + return 0; + } + if (!prefixcmp(var, "diff.")) { const char *ep = strrchr(var, '.'); if (ep != var + 4) { @@ -205,9 +217,8 @@ static char *quote_two(const char *one, const char *two) { int need_one = quote_c_style(one, NULL, NULL, 1); int need_two = quote_c_style(two, NULL, NULL, 1); - struct strbuf res; + struct strbuf res = STRBUF_INIT; - strbuf_init(&res, 0); if (need_one + need_two) { strbuf_addch(&res, '"'); quote_c_style(one, &res, NULL, 1); @@ -316,6 +327,15 @@ static void emit_rewrite_diff(const char *name_a, const char *new = diff_get_color(color_diff, DIFF_FILE_NEW); const char *reset = diff_get_color(color_diff, DIFF_RESET); static struct strbuf a_name = STRBUF_INIT, b_name = STRBUF_INIT; + const char *a_prefix, *b_prefix; + + if (diff_mnemonic_prefix && DIFF_OPT_TST(o, REVERSE_DIFF)) { + a_prefix = o->b_prefix; + b_prefix = o->a_prefix; + } else { + a_prefix = o->a_prefix; + b_prefix = o->b_prefix; + } name_a += (*name_a == '/'); name_b += (*name_b == '/'); @@ -324,8 +344,8 @@ static void emit_rewrite_diff(const char *name_a, strbuf_reset(&a_name); strbuf_reset(&b_name); - quote_two_c_style(&a_name, o->a_prefix, name_a, 0); - quote_two_c_style(&b_name, o->b_prefix, name_b, 0); + quote_two_c_style(&a_name, a_prefix, name_a, 0); + quote_two_c_style(&b_name, b_prefix, name_b, 0); diff_populate_filespec(one, 0); diff_populate_filespec(two, 0); @@ -380,7 +400,6 @@ static void diff_words_append(char *line, unsigned long len, } struct diff_words_data { - struct xdiff_emit_state xm; struct diff_words_buffer minus, plus; FILE *file; }; @@ -470,11 +489,8 @@ static void diff_words_show(struct diff_words_data *diff_words) xpp.flags = XDF_NEED_MINIMAL; xecfg.ctxlen = diff_words->minus.alloc + diff_words->plus.alloc; - ecb.outf = xdiff_outf; - ecb.priv = diff_words; - diff_words->xm.consume = fn_out_diff_words_aux; - xdi_diff(&minus, &plus, &xpp, &xecfg, &ecb); - + xdi_diff_outf(&minus, &plus, fn_out_diff_words_aux, diff_words, + &xpp, &xecfg, &ecb); free(minus.ptr); free(plus.ptr); diff_words->minus.text.size = diff_words->plus.text.size = 0; @@ -488,7 +504,6 @@ static void diff_words_show(struct diff_words_data *diff_words) typedef unsigned long (*sane_truncate_fn)(char *line, unsigned long len); struct emit_callback { - struct xdiff_emit_state xm; int nparents, color_diff; unsigned ws_rule; sane_truncate_fn truncate; @@ -598,6 +613,12 @@ static void fn_out_consume(void *priv, char *line, unsigned long len) ecbdata->label_path[0] = ecbdata->label_path[1] = NULL; } + if (diff_suppress_blank_empty + && len == 2 && line[0] == ' ' && line[1] == '\n') { + line[0] = '\n'; + len = 1; + } + /* This is not really necessary for now because * this codepath only deals with two-way diffs. */ @@ -661,7 +682,7 @@ static char *pprint_rename(const char *a, const char *b) { const char *old = a; const char *new = b; - struct strbuf name; + struct strbuf name = STRBUF_INIT; int pfx_length, sfx_length; int len_a = strlen(a); int len_b = strlen(b); @@ -669,7 +690,6 @@ static char *pprint_rename(const char *a, const char *b) int qlen_a = quote_c_style(a, NULL, NULL, 0); int qlen_b = quote_c_style(b, NULL, NULL, 0); - strbuf_init(&name, 0); if (qlen_a || qlen_b) { quote_c_style(a, &name, NULL, 0); strbuf_addstr(&name, " => "); @@ -726,8 +746,6 @@ static char *pprint_rename(const char *a, const char *b) } struct diffstat_t { - struct xdiff_emit_state xm; - int nr; int alloc; struct diffstat_file { @@ -814,8 +832,7 @@ static void fill_print_name(struct diffstat_file *file) return; if (!file->is_renamed) { - struct strbuf buf; - strbuf_init(&buf, 0); + struct strbuf buf = STRBUF_INIT; if (quote_c_style(file->name, &buf, NULL, 0)) { pname = strbuf_detach(&buf, NULL); } else { @@ -1122,9 +1139,13 @@ static void show_dirstat(struct diff_options *options) /* * Original minus copied is the removed material, * added is the new material. They are both damages - * made to the preimage. + * made to the preimage. In --dirstat-by-file mode, count + * damaged files, not damaged lines. This is done by + * counting only a single damaged line per file. */ damage = (p->one->size - copied) + added; + if (DIFF_OPT_TST(options, DIRSTAT_BY_FILE) && damage > 0) + damage = 1; ALLOC_GROW(dir.files, dir.nr + 1, dir.alloc); dir.files[dir.nr].name = name; @@ -1157,7 +1178,6 @@ static void free_diffstat_info(struct diffstat_t *diffstat) } struct checkdiff_t { - struct xdiff_emit_state xm; const char *filename; int lineno; struct diff_options *o; @@ -1399,23 +1419,36 @@ static const struct funcname_pattern_entry *funcname_pattern(const char *ident) } static const struct funcname_pattern_entry builtin_funcname_pattern[] = { + { "bibtex", "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$", + REG_EXTENDED }, + { "html", "^[ \t]*(<[Hh][1-6][ \t].*>.*)$", REG_EXTENDED }, { "java", "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n" "^[ \t]*(([ \t]*[A-Za-z_][A-Za-z_0-9]*){2,}[ \t]*\\([^;]*)$", REG_EXTENDED }, + { "objc", + /* Negate C statements that can look like functions */ + "!^[ \t]*(do|for|if|else|return|switch|while)\n" + /* Objective-C methods */ + "^[ \t]*([-+][ \t]*\\([ \t]*[A-Za-z_][A-Za-z_0-9* \t]*\\)[ \t]*[A-Za-z_].*)$\n" + /* C functions */ + "^[ \t]*(([ \t]*[A-Za-z_][A-Za-z_0-9]*){2,}[ \t]*\\([^;]*)$\n" + /* Objective-C class/protocol definitions */ + "^(@(implementation|interface|protocol)[ \t].*)$", + REG_EXTENDED }, { "pascal", "^((procedure|function|constructor|destructor|interface|" "implementation|initialization|finalization)[ \t]*.*)$" - "|" + "\n" "^(.*=[ \t]*(class|record).*)$", REG_EXTENDED }, - { "bibtex", "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$", + { "php", "^[\t ]*((function|class).*)", REG_EXTENDED }, + { "python", "^[ \t]*((class|def)[ \t].*)$", REG_EXTENDED }, + { "ruby", "^[ \t]*((class|module|def)[ \t].*)$", REG_EXTENDED }, { "tex", "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$", REG_EXTENDED }, - { "ruby", "^[ \t]*((class|module|def)[ \t].*)$", - REG_EXTENDED }, }; static const struct funcname_pattern_entry *diff_funcname_pattern(struct diff_filespec *one) @@ -1451,6 +1484,14 @@ static const struct funcname_pattern_entry *diff_funcname_pattern(struct diff_fi return NULL; } +void diff_set_mnemonic_prefix(struct diff_options *options, const char *a, const char *b) +{ + if (!options->a_prefix) + options->a_prefix = a; + if (!options->b_prefix) + options->b_prefix = b; +} + static void builtin_diff(const char *name_a, const char *name_b, struct diff_filespec *one, @@ -1464,13 +1505,23 @@ static void builtin_diff(const char *name_a, char *a_one, *b_two; const char *set = diff_get_color_opt(o, DIFF_METAINFO); const char *reset = diff_get_color_opt(o, DIFF_RESET); + const char *a_prefix, *b_prefix; + + diff_set_mnemonic_prefix(o, "a/", "b/"); + if (DIFF_OPT_TST(o, REVERSE_DIFF)) { + a_prefix = o->b_prefix; + b_prefix = o->a_prefix; + } else { + a_prefix = o->a_prefix; + b_prefix = o->b_prefix; + } /* Never use a non-valid filename anywhere if at all possible */ name_a = DIFF_FILE_VALID(one) ? name_a : name_b; name_b = DIFF_FILE_VALID(two) ? name_b : name_a; - a_one = quote_two(o->a_prefix, name_a + (*name_a == '/')); - b_two = quote_two(o->b_prefix, name_b + (*name_b == '/')); + a_one = quote_two(a_prefix, name_a + (*name_a == '/')); + b_two = quote_two(b_prefix, name_b + (*name_b == '/')); lbl[0] = DIFF_FILE_VALID(one) ? a_one : "/dev/null"; lbl[1] = DIFF_FILE_VALID(two) ? b_two : "/dev/null"; fprintf(o->file, "%sdiff --git %s %s%s\n", set, a_one, b_two, reset); @@ -1552,15 +1603,13 @@ static void builtin_diff(const char *name_a, xecfg.ctxlen = strtoul(diffopts + 10, NULL, 10); else if (!prefixcmp(diffopts, "-u")) xecfg.ctxlen = strtoul(diffopts + 2, NULL, 10); - ecb.outf = xdiff_outf; - ecb.priv = &ecbdata; - ecbdata.xm.consume = fn_out_consume; if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS)) { ecbdata.diff_words = xcalloc(1, sizeof(struct diff_words_data)); ecbdata.diff_words->file = o->file; } - xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb); + xdi_diff_outf(&mf1, &mf2, fn_out_consume, &ecbdata, + &xpp, &xecfg, &ecb); if (DIFF_OPT_TST(o, COLOR_DIFF_WORDS)) free_diff_words_data(&ecbdata); } @@ -1611,9 +1660,8 @@ static void builtin_diffstat(const char *name_a, const char *name_b, memset(&xecfg, 0, sizeof(xecfg)); xpp.flags = XDF_NEED_MINIMAL | o->xdl_opts; - ecb.outf = xdiff_outf; - ecb.priv = diffstat; - xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb); + xdi_diff_outf(&mf1, &mf2, diffstat_consume, diffstat, + &xpp, &xecfg, &ecb); } free_and_return: @@ -1634,7 +1682,6 @@ static void builtin_checkdiff(const char *name_a, const char *name_b, return; memset(&data, 0, sizeof(data)); - data.xm.consume = checkdiff_consume; data.filename = name_b ? name_b : name_a; data.lineno = 0; data.o = o; @@ -1660,9 +1707,8 @@ static void builtin_checkdiff(const char *name_a, const char *name_b, memset(&xecfg, 0, sizeof(xecfg)); xecfg.ctxlen = 1; /* at least one context line */ xpp.flags = XDF_NEED_MINIMAL; - ecb.outf = xdiff_outf; - ecb.priv = &data; - xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb); + xdi_diff_outf(&mf1, &mf2, checkdiff_consume, &data, + &xpp, &xecfg, &ecb); if ((data.ws_rule & WS_TRAILING_SPACE) && data.trailing_blanks_start) { @@ -1771,10 +1817,9 @@ static int reuse_worktree_file(const char *name, const unsigned char *sha1, int static int populate_from_stdin(struct diff_filespec *s) { - struct strbuf buf; + struct strbuf buf = STRBUF_INIT; size_t size = 0; - strbuf_init(&buf, 0); if (strbuf_read(&buf, 0, 0) < 0) return error("error while reading from stdin %s", strerror(errno)); @@ -1826,7 +1871,7 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only) if (!s->sha1_valid || reuse_worktree_file(s->path, s->sha1, 0)) { - struct strbuf buf; + struct strbuf buf = STRBUF_INIT; struct stat st; int fd; @@ -1869,7 +1914,6 @@ int diff_populate_filespec(struct diff_filespec *s, int size_only) /* * Convert from working tree format to canonical git format */ - strbuf_init(&buf, 0); if (convert_to_git(s->path, s->data, s->size, &buf, safe_crlf)) { size_t size = 0; munmap(s->data, s->size); @@ -2332,8 +2376,10 @@ void diff_setup(struct diff_options *options) DIFF_OPT_CLR(options, COLOR_DIFF); options->detect_rename = diff_detect_rename_default; - options->a_prefix = "a/"; - options->b_prefix = "b/"; + if (!diff_mnemonic_prefix) { + options->a_prefix = "a/"; + options->b_prefix = "b/"; + } } int diff_setup_done(struct diff_options *options) @@ -2490,6 +2536,10 @@ int diff_opt_parse(struct diff_options *options, const char **av, int ac) else if (!strcmp(arg, "--cumulative")) { options->output_format |= DIFF_FORMAT_DIRSTAT; DIFF_OPT_SET(options, DIRSTAT_CUMULATIVE); + } else if (opt_arg(arg, 0, "dirstat-by-file", + &options->dirstat_percent)) { + options->output_format |= DIFF_FORMAT_DIRSTAT; + DIFF_OPT_SET(options, DIRSTAT_BY_FILE); } else if (!strcmp(arg, "--check")) options->output_format |= DIFF_FORMAT_CHECKDIFF; @@ -3046,8 +3096,7 @@ static void diff_summary(FILE *file, struct diff_filepair *p) } struct patch_id_t { - struct xdiff_emit_state xm; - SHA_CTX *ctx; + git_SHA_CTX *ctx; int patchlen; }; @@ -3075,7 +3124,7 @@ static void patch_id_consume(void *priv, char *line, unsigned long len) new_len = remove_space(line, len); - SHA1_Update(data->ctx, line, new_len); + git_SHA1_Update(data->ctx, line, new_len); data->patchlen += new_len; } @@ -3084,14 +3133,13 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1) { struct diff_queue_struct *q = &diff_queued_diff; int i; - SHA_CTX ctx; + git_SHA_CTX ctx; struct patch_id_t data; char buffer[PATH_MAX * 4 + 20]; - SHA1_Init(&ctx); + git_SHA1_Init(&ctx); memset(&data, 0, sizeof(struct patch_id_t)); data.ctx = &ctx; - data.xm.consume = patch_id_consume; for (i = 0; i < q->nr; i++) { xpparam_t xpp; @@ -3151,17 +3199,16 @@ static int diff_get_patch_id(struct diff_options *options, unsigned char *sha1) len2, p->two->path, len1, p->one->path, len2, p->two->path); - SHA1_Update(&ctx, buffer, len1); + git_SHA1_Update(&ctx, buffer, len1); xpp.flags = XDF_NEED_MINIMAL; xecfg.ctxlen = 3; xecfg.flags = XDL_EMIT_FUNCNAMES; - ecb.outf = xdiff_outf; - ecb.priv = &data; - xdi_diff(&mf1, &mf2, &xpp, &xecfg, &ecb); + xdi_diff_outf(&mf1, &mf2, patch_id_consume, &data, + &xpp, &xecfg, &ecb); } - SHA1_Final(sha1, &ctx); + git_SHA1_Final(sha1, &ctx); return 0; } @@ -3235,7 +3282,6 @@ void diff_flush(struct diff_options *options) struct diffstat_t diffstat; memset(&diffstat, 0, sizeof(struct diffstat_t)); - diffstat.xm.consume = diffstat_consume; for (i = 0; i < q->nr; i++) { struct diff_filepair *p = q->queue[i]; if (check_pair_status(p)) |