diff options
Diffstat (limited to 'grep.c')
| -rw-r--r-- | grep.c | 322 |
1 files changed, 313 insertions, 9 deletions
@@ -3,6 +3,187 @@ #include "userdiff.h" #include "xdiff-interface.h" +static int grep_source_load(struct grep_source *gs); +static int grep_source_is_binary(struct grep_source *gs); + +static struct grep_opt grep_defaults; + +/* + * Initialize the grep_defaults template with hardcoded defaults. + * We could let the compiler do this, but without C99 initializers + * the code gets unwieldy and unreadable, so... + */ +void init_grep_defaults(void) +{ + struct grep_opt *opt = &grep_defaults; + static int run_once; + + if (run_once) + return; + run_once++; + + memset(opt, 0, sizeof(*opt)); + opt->relative = 1; + opt->pathname = 1; + opt->regflags = REG_NEWLINE; + opt->max_depth = -1; + opt->pattern_type_option = GREP_PATTERN_TYPE_UNSPECIFIED; + opt->extended_regexp_option = 0; + strcpy(opt->color_context, ""); + strcpy(opt->color_filename, ""); + strcpy(opt->color_function, ""); + strcpy(opt->color_lineno, ""); + strcpy(opt->color_match, GIT_COLOR_BOLD_RED); + strcpy(opt->color_selected, ""); + strcpy(opt->color_sep, GIT_COLOR_CYAN); + opt->color = -1; +} + +static int parse_pattern_type_arg(const char *opt, const char *arg) +{ + if (!strcmp(arg, "default")) + return GREP_PATTERN_TYPE_UNSPECIFIED; + else if (!strcmp(arg, "basic")) + return GREP_PATTERN_TYPE_BRE; + else if (!strcmp(arg, "extended")) + return GREP_PATTERN_TYPE_ERE; + else if (!strcmp(arg, "fixed")) + return GREP_PATTERN_TYPE_FIXED; + else if (!strcmp(arg, "perl")) + return GREP_PATTERN_TYPE_PCRE; + die("bad %s argument: %s", opt, arg); +} + +/* + * Read the configuration file once and store it in + * the grep_defaults template. + */ +int grep_config(const char *var, const char *value, void *cb) +{ + struct grep_opt *opt = &grep_defaults; + char *color = NULL; + + if (userdiff_config(var, value) < 0) + return -1; + + if (!strcmp(var, "grep.extendedregexp")) { + if (git_config_bool(var, value)) + opt->extended_regexp_option = 1; + else + opt->extended_regexp_option = 0; + return 0; + } + + if (!strcmp(var, "grep.patterntype")) { + opt->pattern_type_option = parse_pattern_type_arg(var, value); + return 0; + } + + if (!strcmp(var, "grep.linenumber")) { + opt->linenum = git_config_bool(var, value); + return 0; + } + + if (!strcmp(var, "color.grep")) + opt->color = git_config_colorbool(var, value); + else if (!strcmp(var, "color.grep.context")) + color = opt->color_context; + else if (!strcmp(var, "color.grep.filename")) + color = opt->color_filename; + else if (!strcmp(var, "color.grep.function")) + color = opt->color_function; + else if (!strcmp(var, "color.grep.linenumber")) + color = opt->color_lineno; + else if (!strcmp(var, "color.grep.match")) + color = opt->color_match; + else if (!strcmp(var, "color.grep.selected")) + color = opt->color_selected; + else if (!strcmp(var, "color.grep.separator")) + color = opt->color_sep; + + if (color) { + if (!value) + return config_error_nonbool(var); + color_parse(value, var, color); + } + return 0; +} + +/* + * Initialize one instance of grep_opt and copy the + * default values from the template we read the configuration + * information in an earlier call to git_config(grep_config). + */ +void grep_init(struct grep_opt *opt, const char *prefix) +{ + struct grep_opt *def = &grep_defaults; + + memset(opt, 0, sizeof(*opt)); + opt->prefix = prefix; + opt->prefix_length = (prefix && *prefix) ? strlen(prefix) : 0; + opt->pattern_tail = &opt->pattern_list; + opt->header_tail = &opt->header_list; + + opt->color = def->color; + opt->extended_regexp_option = def->extended_regexp_option; + opt->pattern_type_option = def->pattern_type_option; + opt->linenum = def->linenum; + opt->max_depth = def->max_depth; + opt->pathname = def->pathname; + opt->regflags = def->regflags; + opt->relative = def->relative; + + strcpy(opt->color_context, def->color_context); + strcpy(opt->color_filename, def->color_filename); + strcpy(opt->color_function, def->color_function); + strcpy(opt->color_lineno, def->color_lineno); + strcpy(opt->color_match, def->color_match); + strcpy(opt->color_selected, def->color_selected); + strcpy(opt->color_sep, def->color_sep); +} + +void grep_commit_pattern_type(enum grep_pattern_type pattern_type, struct grep_opt *opt) +{ + if (pattern_type != GREP_PATTERN_TYPE_UNSPECIFIED) + grep_set_pattern_type_option(pattern_type, opt); + else if (opt->pattern_type_option != GREP_PATTERN_TYPE_UNSPECIFIED) + grep_set_pattern_type_option(opt->pattern_type_option, opt); + else if (opt->extended_regexp_option) + grep_set_pattern_type_option(GREP_PATTERN_TYPE_ERE, opt); +} + +void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, struct grep_opt *opt) +{ + switch (pattern_type) { + case GREP_PATTERN_TYPE_UNSPECIFIED: + /* fall through */ + + case GREP_PATTERN_TYPE_BRE: + opt->fixed = 0; + opt->pcre = 0; + opt->regflags &= ~REG_EXTENDED; + break; + + case GREP_PATTERN_TYPE_ERE: + opt->fixed = 0; + opt->pcre = 0; + opt->regflags |= REG_EXTENDED; + break; + + case GREP_PATTERN_TYPE_FIXED: + opt->fixed = 1; + opt->pcre = 0; + opt->regflags &= ~REG_EXTENDED; + break; + + case GREP_PATTERN_TYPE_PCRE: + opt->fixed = 0; + opt->pcre = 1; + opt->regflags &= ~REG_EXTENDED; + break; + } +} + static struct grep_pat *create_grep_pat(const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t, @@ -60,6 +241,8 @@ void append_header_grep_pattern(struct grep_opt *opt, { struct grep_pat *p = create_grep_pat(pat, strlen(pat), "header", 0, GREP_PATTERN_HEAD, field); + if (field == GREP_HEADER_REFLOG) + opt->use_reflog_filter = 1; do_append_grep_pat(&opt->header_tail, p); } @@ -332,6 +515,87 @@ static struct grep_expr *compile_pattern_expr(struct grep_pat **list) return compile_pattern_or(list); } +static void indent(int in) +{ + while (in-- > 0) + fputc(' ', stderr); +} + +static void dump_grep_pat(struct grep_pat *p) +{ + switch (p->token) { + case GREP_AND: fprintf(stderr, "*and*"); break; + case GREP_OPEN_PAREN: fprintf(stderr, "*(*"); break; + case GREP_CLOSE_PAREN: fprintf(stderr, "*)*"); break; + case GREP_NOT: fprintf(stderr, "*not*"); break; + case GREP_OR: fprintf(stderr, "*or*"); break; + + case GREP_PATTERN: fprintf(stderr, "pattern"); break; + case GREP_PATTERN_HEAD: fprintf(stderr, "pattern_head"); break; + case GREP_PATTERN_BODY: fprintf(stderr, "pattern_body"); break; + } + + switch (p->token) { + default: break; + case GREP_PATTERN_HEAD: + fprintf(stderr, "<head %d>", p->field); break; + case GREP_PATTERN_BODY: + fprintf(stderr, "<body>"); break; + } + switch (p->token) { + default: break; + case GREP_PATTERN_HEAD: + case GREP_PATTERN_BODY: + case GREP_PATTERN: + fprintf(stderr, "%.*s", (int)p->patternlen, p->pattern); + break; + } + fputc('\n', stderr); +} + +static void dump_grep_expression_1(struct grep_expr *x, int in) +{ + indent(in); + switch (x->node) { + case GREP_NODE_TRUE: + fprintf(stderr, "true\n"); + break; + case GREP_NODE_ATOM: + dump_grep_pat(x->u.atom); + break; + case GREP_NODE_NOT: + fprintf(stderr, "(not\n"); + dump_grep_expression_1(x->u.unary, in+1); + indent(in); + fprintf(stderr, ")\n"); + break; + case GREP_NODE_AND: + fprintf(stderr, "(and\n"); + dump_grep_expression_1(x->u.binary.left, in+1); + dump_grep_expression_1(x->u.binary.right, in+1); + indent(in); + fprintf(stderr, ")\n"); + break; + case GREP_NODE_OR: + fprintf(stderr, "(or\n"); + dump_grep_expression_1(x->u.binary.left, in+1); + dump_grep_expression_1(x->u.binary.right, in+1); + indent(in); + fprintf(stderr, ")\n"); + break; + } +} + +static void dump_grep_expression(struct grep_opt *opt) +{ + struct grep_expr *x = opt->pattern_expression; + + if (opt->all_match) + fprintf(stderr, "[all-match]\n"); + dump_grep_expression_1(x, 0); + fflush(NULL); +} + static struct grep_expr *grep_true_expr(void) { struct grep_expr *z = xcalloc(1, sizeof(*z)); @@ -361,7 +625,8 @@ static struct grep_expr *prep_header_patterns(struct grep_opt *opt) for (p = opt->header_list; p; p = p->next) { if (p->token != GREP_PATTERN_HEAD) die("bug: a non-header pattern in grep header list."); - if (p->field < 0 || GREP_HEADER_FIELD_MAX <= p->field) + if (p->field < GREP_HEADER_FIELD_MIN || + GREP_HEADER_FIELD_MAX <= p->field) die("bug: unknown header field %d", p->field); compile_regexp(p, opt); } @@ -395,7 +660,23 @@ static struct grep_expr *prep_header_patterns(struct grep_opt *opt) return header_expr; } -void compile_grep_patterns(struct grep_opt *opt) +static struct grep_expr *grep_splice_or(struct grep_expr *x, struct grep_expr *y) +{ + struct grep_expr *z = x; + + while (x) { + assert(x->node == GREP_NODE_OR); + if (x->u.binary.right && + x->u.binary.right->node == GREP_NODE_TRUE) { + x->u.binary.right = y; + break; + } + x = x->u.binary.right; + } + return z; +} + +static void compile_grep_patterns_real(struct grep_opt *opt) { struct grep_pat *p; struct grep_expr *header_expr = prep_header_patterns(opt); @@ -415,7 +696,7 @@ void compile_grep_patterns(struct grep_opt *opt) if (opt->all_match || header_expr) opt->extended = 1; - else if (!opt->extended) + else if (!opt->extended && !opt->debug) return; p = opt->pattern_list; @@ -429,12 +710,22 @@ void compile_grep_patterns(struct grep_opt *opt) if (!opt->pattern_expression) opt->pattern_expression = header_expr; + else if (opt->all_match) + opt->pattern_expression = grep_splice_or(header_expr, + opt->pattern_expression); else opt->pattern_expression = grep_or_expr(opt->pattern_expression, header_expr); opt->all_match = 1; } +void compile_grep_patterns(struct grep_opt *opt) +{ + compile_grep_patterns_real(opt); + if (opt->debug) + dump_grep_expression(opt); +} + static void free_pattern_expr(struct grep_expr *x) { switch (x->node) { @@ -586,6 +877,7 @@ static struct { } header_field[] = { { "author ", 7 }, { "committer ", 10 }, + { "reflog ", 7 }, }; static int match_one_pattern(struct grep_pat *p, char *bol, char *eol, @@ -609,7 +901,14 @@ static int match_one_pattern(struct grep_pat *p, char *bol, char *eol, if (strncmp(bol, field, len)) return 0; bol += len; - saved_ch = strip_timestamp(bol, &eol); + switch (p->field) { + case GREP_HEADER_AUTHOR: + case GREP_HEADER_COMMITTER: + saved_ch = strip_timestamp(bol, &eol); + break; + default: + break; + } } again: @@ -1252,7 +1551,7 @@ int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size) struct grep_source gs; int r; - grep_source_init(&gs, GREP_SOURCE_BUF, NULL, NULL); + grep_source_init(&gs, GREP_SOURCE_BUF, NULL, NULL, NULL); gs.buf = buf; gs.size = size; @@ -1263,10 +1562,12 @@ int grep_buffer(struct grep_opt *opt, char *buf, unsigned long size) } void grep_source_init(struct grep_source *gs, enum grep_source_type type, - const char *name, const void *identifier) + const char *name, const char *path, + const void *identifier) { gs->type = type; gs->name = name ? xstrdup(name) : NULL; + gs->path = path ? xstrdup(path) : NULL; gs->buf = NULL; gs->size = 0; gs->driver = NULL; @@ -1288,6 +1589,8 @@ void grep_source_clear(struct grep_source *gs) { free(gs->name); gs->name = NULL; + free(gs->path); + gs->path = NULL; free(gs->identifier); gs->identifier = NULL; grep_source_clear_data(gs); @@ -1358,7 +1661,7 @@ static int grep_source_load_file(struct grep_source *gs) return 0; } -int grep_source_load(struct grep_source *gs) +static int grep_source_load(struct grep_source *gs) { if (gs->buf) return 0; @@ -1380,13 +1683,14 @@ void grep_source_load_driver(struct grep_source *gs) return; grep_attr_lock(); - gs->driver = userdiff_find_by_path(gs->name); + if (gs->path) + gs->driver = userdiff_find_by_path(gs->path); if (!gs->driver) gs->driver = userdiff_find_by_name("default"); grep_attr_unlock(); } -int grep_source_is_binary(struct grep_source *gs) +static int grep_source_is_binary(struct grep_source *gs) { grep_source_load_driver(gs); if (gs->driver->binary != -1) |