Merge branch 'nd/test-helpers' into maint
[gitweb.git] / pretty.c
index 92b2870a7eabb6a99ffbbcfc222d2ff1c1186fa0..b27165603ad953cb4bb0436566dc73fb374c3333 100644 (file)
--- a/pretty.c
+++ b/pretty.c
@@ -16,6 +16,7 @@ static struct cmt_fmt_map {
        const char *name;
        enum cmit_fmt format;
        int is_tformat;
+       int expand_tabs_in_log;
        int is_alias;
        const char *user_format;
 } *commit_formats;
@@ -87,13 +88,13 @@ static int git_pretty_formats_config(const char *var, const char *value, void *c
 static void setup_commit_formats(void)
 {
        struct cmt_fmt_map builtin_formats[] = {
-               { "raw",        CMIT_FMT_RAW,           0 },
-               { "medium",     CMIT_FMT_MEDIUM,        0 },
-               { "short",      CMIT_FMT_SHORT,         0 },
-               { "email",      CMIT_FMT_EMAIL,         0 },
-               { "fuller",     CMIT_FMT_FULLER,        0 },
-               { "full",       CMIT_FMT_FULL,          0 },
-               { "oneline",    CMIT_FMT_ONELINE,       1 }
+               { "raw",        CMIT_FMT_RAW,           0,      0 },
+               { "medium",     CMIT_FMT_MEDIUM,        0,      8 },
+               { "short",      CMIT_FMT_SHORT,         0,      0 },
+               { "email",      CMIT_FMT_EMAIL,         0,      0 },
+               { "fuller",     CMIT_FMT_FULLER,        0,      8 },
+               { "full",       CMIT_FMT_FULL,          0,      8 },
+               { "oneline",    CMIT_FMT_ONELINE,       1,      0 }
        };
        commit_formats_len = ARRAY_SIZE(builtin_formats);
        builtin_formats_len = commit_formats_len;
@@ -172,6 +173,7 @@ void get_commit_format(const char *arg, struct rev_info *rev)
 
        rev->commit_format = commit_format->format;
        rev->use_terminator = commit_format->is_tformat;
+       rev->expand_tabs_in_log_default = commit_format->expand_tabs_in_log;
        if (commit_format->format == CMIT_FMT_USERFORMAT) {
                save_user_format(rev, commit_format->user_format,
                                 commit_format->is_tformat);
@@ -505,7 +507,7 @@ void pp_user_info(struct pretty_print_context *pp,
        }
 }
 
-static int is_empty_line(const char *line, int *len_p)
+static int is_blank_line(const char *line, int *len_p)
 {
        int len = *len_p;
        while (len && isspace(line[len - 1]))
@@ -514,14 +516,14 @@ static int is_empty_line(const char *line, int *len_p)
        return !len;
 }
 
-static const char *skip_empty_lines(const char *msg)
+const char *skip_blank_lines(const char *msg)
 {
        for (;;) {
                int linelen = get_one_line(msg);
                int ll = linelen;
                if (!linelen)
                        break;
-               if (!is_empty_line(msg, &ll))
+               if (!is_blank_line(msg, &ll))
                        break;
                msg += linelen;
        }
@@ -873,7 +875,7 @@ const char *format_subject(struct strbuf *sb, const char *msg,
                int linelen = get_one_line(line);
 
                msg += linelen;
-               if (!linelen || is_empty_line(line, &linelen))
+               if (!linelen || is_blank_line(line, &linelen))
                        break;
 
                if (!sb)
@@ -892,11 +894,11 @@ static void parse_commit_message(struct format_commit_context *c)
        const char *msg = c->message + c->message_off;
        const char *start = c->message;
 
-       msg = skip_empty_lines(msg);
+       msg = skip_blank_lines(msg);
        c->subject_off = msg - start;
 
        msg = format_subject(NULL, msg, NULL);
-       msg = skip_empty_lines(msg);
+       msg = skip_blank_lines(msg);
        c->body_off = msg - start;
 
        c->commit_message_parsed = 1;
@@ -1020,9 +1022,15 @@ static size_t parse_padding_placeholder(struct strbuf *sb,
                int width;
                if (!end || end == start)
                        return 0;
-               width = strtoul(start, &next, 10);
+               width = strtol(start, &next, 10);
                if (next == start || width == 0)
                        return 0;
+               if (width < 0) {
+                       if (to_column)
+                               width += term_columns();
+                       if (width < 0)
+                               return 0;
+               }
                c->padding = to_column ? -width : width;
                c->flush_type = flush_type;
 
@@ -1061,7 +1069,7 @@ static size_t format_commit_one(struct strbuf *sb, /* in UTF-8 */
        switch (placeholder[0]) {
        case 'C':
                if (starts_with(placeholder + 1, "(auto)")) {
-                       c->auto_color = 1;
+                       c->auto_color = want_color(c->pretty_ctx->color);
                        return 7; /* consumed 7 bytes, "C(auto)" */
                } else {
                        int ret = parse_color(sb, placeholder, c);
@@ -1297,6 +1305,7 @@ static size_t format_and_pad_commit(struct strbuf *sb, /* in UTF-8 */
                if (!start)
                        start = sb->buf;
                occupied = utf8_strnwidth(start, -1, 1);
+               occupied += c->pretty_ctx->graph_width;
                padding = (-padding) - occupied;
        }
        while (1) {
@@ -1629,6 +1638,72 @@ void pp_title_line(struct pretty_print_context *pp,
        strbuf_release(&title);
 }
 
+static int pp_utf8_width(const char *start, const char *end)
+{
+       int width = 0;
+       size_t remain = end - start;
+
+       while (remain) {
+               int n = utf8_width(&start, &remain);
+               if (n < 0 || !start)
+                       return -1;
+               width += n;
+       }
+       return width;
+}
+
+static void strbuf_add_tabexpand(struct strbuf *sb, int tabwidth,
+                                const char *line, int linelen)
+{
+       const char *tab;
+
+       while ((tab = memchr(line, '\t', linelen)) != NULL) {
+               int width = pp_utf8_width(line, tab);
+
+               /*
+                * If it wasn't well-formed utf8, or it
+                * had characters with badly defined
+                * width (control characters etc), just
+                * give up on trying to align things.
+                */
+               if (width < 0)
+                       break;
+
+               /* Output the data .. */
+               strbuf_add(sb, line, tab - line);
+
+               /* .. and the de-tabified tab */
+               strbuf_addchars(sb, ' ', tabwidth - (width % tabwidth));
+
+               /* Skip over the printed part .. */
+               linelen -= tab + 1 - line;
+               line = tab + 1;
+       }
+
+       /*
+        * Print out everything after the last tab without
+        * worrying about width - there's nothing more to
+        * align.
+        */
+       strbuf_add(sb, line, linelen);
+}
+
+/*
+ * pp_handle_indent() prints out the intendation, and
+ * the whole line (without the final newline), after
+ * de-tabifying.
+ */
+static void pp_handle_indent(struct pretty_print_context *pp,
+                            struct strbuf *sb, int indent,
+                            const char *line, int linelen)
+{
+       strbuf_addchars(sb, ' ', indent);
+       if (pp->expand_tabs_in_log)
+               strbuf_add_tabexpand(sb, pp->expand_tabs_in_log, line, linelen);
+       else
+               strbuf_add(sb, line, linelen);
+}
+
 void pp_remainder(struct pretty_print_context *pp,
                  const char **msg_p,
                  struct strbuf *sb,
@@ -1643,7 +1718,7 @@ void pp_remainder(struct pretty_print_context *pp,
                if (!linelen)
                        break;
 
-               if (is_empty_line(line, &linelen)) {
+               if (is_blank_line(line, &linelen)) {
                        if (first)
                                continue;
                        if (pp->fmt == CMIT_FMT_SHORT)
@@ -1653,8 +1728,12 @@ void pp_remainder(struct pretty_print_context *pp,
 
                strbuf_grow(sb, linelen + indent + 20);
                if (indent)
-                       strbuf_addchars(sb, ' ', indent);
-               strbuf_add(sb, line, linelen);
+                       pp_handle_indent(pp, sb, indent, line, linelen);
+               else if (pp->expand_tabs_in_log)
+                       strbuf_add_tabexpand(sb, pp->expand_tabs_in_log,
+                                            line, linelen);
+               else
+                       strbuf_add(sb, line, linelen);
                strbuf_addch(sb, '\n');
        }
 }
@@ -1710,7 +1789,7 @@ void pretty_print_commit(struct pretty_print_context *pp,
        }
 
        /* Skip excess blank lines at the beginning of body, if any... */
-       msg = skip_empty_lines(msg);
+       msg = skip_blank_lines(msg);
 
        /* These formats treat the title line specially. */
        if (pp->fmt == CMIT_FMT_ONELINE || pp->fmt == CMIT_FMT_EMAIL)