gitweb: Run in FastCGI mode if gitweb script has .fcgi extension
[gitweb.git] / grep.c
diff --git a/grep.c b/grep.c
index 8e1f7de7717da95e8954491f5205547f2091aa35..543b1d53784c16020dea089f23c431c7f2608425 100644 (file)
--- a/grep.c
+++ b/grep.c
@@ -11,8 +11,8 @@ void append_header_grep_pattern(struct grep_opt *opt, enum grep_header_field fie
        p->no = 0;
        p->token = GREP_PATTERN_HEAD;
        p->field = field;
-       *opt->pattern_tail = p;
-       opt->pattern_tail = &p->next;
+       *opt->header_tail = p;
+       opt->header_tail = &p->next;
        p->next = NULL;
 }
 
@@ -29,17 +29,36 @@ void append_grep_pattern(struct grep_opt *opt, const char *pat,
        p->next = NULL;
 }
 
+struct grep_opt *grep_opt_dup(const struct grep_opt *opt)
+{
+       struct grep_pat *pat;
+       struct grep_opt *ret = xmalloc(sizeof(struct grep_opt));
+       *ret = *opt;
+
+       ret->pattern_list = NULL;
+       ret->pattern_tail = &ret->pattern_list;
+
+       for(pat = opt->pattern_list; pat != NULL; pat = pat->next)
+       {
+               if(pat->token == GREP_PATTERN_HEAD)
+                       append_header_grep_pattern(ret, pat->field,
+                                                  pat->pattern);
+               else
+                       append_grep_pattern(ret, pat->pattern, pat->origin,
+                                           pat->no, pat->token);
+       }
+
+       return ret;
+}
+
 static void compile_regexp(struct grep_pat *p, struct grep_opt *opt)
 {
        int err;
 
        p->word_regexp = opt->word_regexp;
        p->ignore_case = opt->ignore_case;
+       p->fixed = opt->fixed;
 
-       if (opt->fixed)
-               p->fixed = 1;
-       if (opt->regflags & REG_ICASE)
-               p->fixed = 0;
        if (p->fixed)
                return;
 
@@ -165,9 +184,26 @@ static struct grep_expr *compile_pattern_expr(struct grep_pat **list)
 void compile_grep_patterns(struct grep_opt *opt)
 {
        struct grep_pat *p;
-
-       if (opt->all_match)
-               opt->extended = 1;
+       struct grep_expr *header_expr = NULL;
+
+       if (opt->header_list) {
+               p = opt->header_list;
+               header_expr = compile_pattern_expr(&p);
+               if (p)
+                       die("incomplete pattern expression: %s", p->pattern);
+               for (p = opt->header_list; p; p = p->next) {
+                       switch (p->token) {
+                       case GREP_PATTERN: /* atom */
+                       case GREP_PATTERN_HEAD:
+                       case GREP_PATTERN_BODY:
+                               compile_regexp(p, opt);
+                               break;
+                       default:
+                               opt->extended = 1;
+                               break;
+                       }
+               }
+       }
 
        for (p = opt->pattern_list; p; p = p->next) {
                switch (p->token) {
@@ -182,7 +218,9 @@ void compile_grep_patterns(struct grep_opt *opt)
                }
        }
 
-       if (!opt->extended)
+       if (opt->all_match || header_expr)
+               opt->extended = 1;
+       else if (!opt->extended)
                return;
 
        /* Then bundle them up in an expression.
@@ -193,6 +231,21 @@ void compile_grep_patterns(struct grep_opt *opt)
                opt->pattern_expression = compile_pattern_expr(&p);
        if (p)
                die("incomplete pattern expression: %s", p->pattern);
+
+       if (!header_expr)
+               return;
+
+       if (opt->pattern_expression) {
+               struct grep_expr *z;
+               z = xcalloc(1, sizeof(*z));
+               z->node = GREP_NODE_OR;
+               z->u.binary.left = opt->pattern_expression;
+               z->u.binary.right = header_expr;
+               opt->pattern_expression = z;
+       } else {
+               opt->pattern_expression = header_expr;
+       }
+       opt->all_match = 1;
 }
 
 static void free_pattern_expr(struct grep_expr *x)
@@ -251,9 +304,29 @@ static int word_char(char ch)
        return isalnum(ch) || ch == '_';
 }
 
+static void output_color(struct grep_opt *opt, const void *data, size_t size,
+                        const char *color)
+{
+       if (opt->color && color && color[0]) {
+               opt->output(opt, color, strlen(color));
+               opt->output(opt, data, size);
+               opt->output(opt, GIT_COLOR_RESET, strlen(GIT_COLOR_RESET));
+       } else
+               opt->output(opt, data, size);
+}
+
+static void output_sep(struct grep_opt *opt, char sign)
+{
+       if (opt->null_following_name)
+               opt->output(opt, "\0", 1);
+       else
+               output_color(opt, &sign, 1, opt->color_sep);
+}
+
 static void show_name(struct grep_opt *opt, const char *name)
 {
-       printf("%s%c", name, opt->null_following_name ? '\0' : '\n');
+       output_color(opt, name, strlen(name), opt->color_filename);
+       opt->output(opt, opt->null_following_name ? "\0" : "\n", 1);
 }
 
 
@@ -490,46 +563,60 @@ static void show_line(struct grep_opt *opt, char *bol, char *eol,
                      const char *name, unsigned lno, char sign)
 {
        int rest = eol - bol;
+       char *line_color = NULL;
 
        if (opt->pre_context || opt->post_context) {
                if (opt->last_shown == 0) {
-                       if (opt->show_hunk_mark)
-                               fputs("--\n", stdout);
-                       else
-                               opt->show_hunk_mark = 1;
-               } else if (lno > opt->last_shown + 1)
-                       fputs("--\n", stdout);
+                       if (opt->show_hunk_mark) {
+                               output_color(opt, "--", 2, opt->color_sep);
+                               opt->output(opt, "\n", 1);
+                       }
+               } else if (lno > opt->last_shown + 1) {
+                       output_color(opt, "--", 2, opt->color_sep);
+                       opt->output(opt, "\n", 1);
+               }
        }
        opt->last_shown = lno;
 
-       if (opt->null_following_name)
-               sign = '\0';
-       if (opt->pathname)
-               printf("%s%c", name, sign);
-       if (opt->linenum)
-               printf("%d%c", lno, sign);
+       if (opt->pathname) {
+               output_color(opt, name, strlen(name), opt->color_filename);
+               output_sep(opt, sign);
+       }
+       if (opt->linenum) {
+               char buf[32];
+               snprintf(buf, sizeof(buf), "%d", lno);
+               output_color(opt, buf, strlen(buf), opt->color_lineno);
+               output_sep(opt, sign);
+       }
        if (opt->color) {
                regmatch_t match;
                enum grep_context ctx = GREP_CONTEXT_BODY;
                int ch = *eol;
                int eflags = 0;
 
+               if (sign == ':')
+                       line_color = opt->color_selected;
+               else if (sign == '-')
+                       line_color = opt->color_context;
+               else if (sign == '=')
+                       line_color = opt->color_function;
                *eol = '\0';
                while (next_match(opt, bol, eol, ctx, &match, eflags)) {
                        if (match.rm_so == match.rm_eo)
                                break;
-                       printf("%.*s%s%.*s%s",
-                              (int)match.rm_so, bol,
-                              opt->color_match,
-                              (int)(match.rm_eo - match.rm_so), bol + match.rm_so,
-                              GIT_COLOR_RESET);
+
+                       output_color(opt, bol, match.rm_so, line_color);
+                       output_color(opt, bol + match.rm_so,
+                                    match.rm_eo - match.rm_so,
+                                    opt->color_match);
                        bol += match.rm_eo;
                        rest -= match.rm_eo;
                        eflags = REG_NOTBOL;
                }
                *eol = ch;
        }
-       printf("%.*s\n", rest, bol);
+       output_color(opt, bol, rest, line_color);
+       opt->output(opt, "\n", 1);
 }
 
 static int match_funcname(struct grep_opt *opt, char *bol, char *eol)
@@ -640,8 +727,15 @@ static int look_ahead(struct grep_opt *opt,
 
                if (p->fixed)
                        hit = !fixmatch(p->pattern, bol, p->ignore_case, &m);
-               else
+               else {
+#ifdef REG_STARTEND
+                       m.rm_so = 0;
+                       m.rm_eo = *left_p;
+                       hit = !regexec(&p->regexp, bol, 1, &m, REG_STARTEND);
+#else
                        hit = !regexec(&p->regexp, bol, 1, &m, 0);
+#endif
+               }
                if (!hit || m.rm_so < 0 || m.rm_eo < 0)
                        continue;
                if (earliest < 0 || m.rm_so < earliest)
@@ -667,6 +761,24 @@ static int look_ahead(struct grep_opt *opt,
        return 0;
 }
 
+int grep_threads_ok(const struct grep_opt *opt)
+{
+       /* If this condition is true, then we may use the attribute
+        * machinery in grep_buffer_1. The attribute code is not
+        * thread safe, so we disable the use of threads.
+        */
+       if (opt->funcname && !opt->unmatch_name_only && !opt->status_only &&
+           !opt->name_only)
+               return 0;
+
+       return 1;
+}
+
+static void std_output(struct grep_opt *opt, const void *buf, size_t size)
+{
+       fwrite(buf, size, 1, stdout);
+}
+
 static int grep_buffer_1(struct grep_opt *opt, const char *name,
                         char *buf, unsigned long size, int collect_hits)
 {
@@ -680,6 +792,12 @@ static int grep_buffer_1(struct grep_opt *opt, const char *name,
        enum grep_context ctx = GREP_CONTEXT_HEAD;
        xdemitconf_t xecfg;
 
+       if (!opt->output)
+               opt->output = std_output;
+
+       if (opt->last_shown && (opt->pre_context || opt->post_context) &&
+           opt->output == std_output)
+               opt->show_hunk_mark = 1;
        opt->last_shown = 0;
 
        if (buffer_is_binary(buf, size)) {
@@ -754,7 +872,10 @@ static int grep_buffer_1(struct grep_opt *opt, const char *name,
                        if (opt->status_only)
                                return 1;
                        if (binary_match_only) {
-                               printf("Binary file %s matches\n", name);
+                               opt->output(opt, "Binary file ", 12);
+                               output_color(opt, name, strlen(name),
+                                            opt->color_filename);
+                               opt->output(opt, " matches\n", 9);
                                return 1;
                        }
                        if (opt->name_only) {
@@ -810,9 +931,13 @@ static int grep_buffer_1(struct grep_opt *opt, const char *name,
         * which feels mostly useless but sometimes useful.  Maybe
         * make it another option?  For now suppress them.
         */
-       if (opt->count && count)
-               printf("%s%c%u\n", name,
-                      opt->null_following_name ? '\0' : ':', count);
+       if (opt->count && count) {
+               char buf[32];
+               output_color(opt, name, strlen(name), opt->color_filename);
+               output_sep(opt, ':');
+               snprintf(buf, sizeof(buf), "%u\n", count);
+               opt->output(opt, buf, strlen(buf));
+       }
        return !!last_hit;
 }