vcs-svn: read instructions from deltas

diff --git a/ws.c b/ws.c
index 7302f8f5a2cd450771aefcba0a385a90121ba0cf..9fb9b14760b100972a1adb5198bff9d6a9941808 100644 (file)
--- a/ws.c
+++ b/ws.c
@@ -56,6 +56,16 @@ unsigned parse_whitespace_rule(const char *string)
                                rule |= whitespace_rule_names[i].rule_bits;
                        break;
                }
+               if (strncmp(string, "tabwidth=", 9) == 0) {
+                       unsigned tabwidth = atoi(string + 9);
+                       if (0 < tabwidth && tabwidth < 0100) {
+                               rule &= ~WS_TAB_WIDTH_MASK;
+                               rule |= tabwidth;
+                       }
+                       else
+                               warning("tabwidth %.*s out of range",
+                                       (int)(len - 9), string + 9);
+               }
                string = ep;
        }
 
@@ -84,7 +94,7 @@ unsigned whitespace_rule(const char *pathname)
                value = attr_whitespace_rule.value;
                if (ATTR_TRUE(value)) {
                        /* true (whitespace) */
-                       unsigned all_rule = 0;
+                       unsigned all_rule = ws_tab_width(whitespace_rule_cfg);
                        int i;
                        for (i = 0; i < ARRAY_SIZE(whitespace_rule_names); i++)
                                if (!whitespace_rule_names[i].loosens_error &&
@@ -93,7 +103,7 @@ unsigned whitespace_rule(const char *pathname)
                        return all_rule;
                } else if (ATTR_FALSE(value)) {
                        /* false (-whitespace) */
-                       return 0;
+                       return ws_tab_width(whitespace_rule_cfg);
                } else if (ATTR_UNSET(value)) {
                        /* reset to default (!whitespace) */
                        return whitespace_rule_cfg;
@@ -206,7 +216,7 @@ static unsigned ws_check_emit_1(const char *line, int len, unsigned ws_rule,
        }
 
        /* Check for indent using non-tab. */
-       if ((ws_rule & WS_INDENT_WITH_NON_TAB) && i - written >= 8) {
+       if ((ws_rule & WS_INDENT_WITH_NON_TAB) && i - written >= ws_tab_width(ws_rule)) {
                result |= WS_INDENT_WITH_NON_TAB;
                if (stream) {
                        fputs(ws, stream);
@@ -320,7 +330,7 @@ void ws_fix_copy(struct strbuf *dst, const char *src, int len, unsigned ws_rule,
                } else if (ch == ' ') {
                        last_space_in_indent = i;
                        if ((ws_rule & WS_INDENT_WITH_NON_TAB) &&
-                           8 <= i - last_tab_in_indent)
+                           ws_tab_width(ws_rule) <= i - last_tab_in_indent)
                                need_fix_leading_space = 1;
                } else
                        break;
@@ -350,7 +360,7 @@ void ws_fix_copy(struct strbuf *dst, const char *src, int len, unsigned ws_rule,
                                strbuf_addch(dst, ch);
                        } else {
                                consecutive_spaces++;
-                               if (consecutive_spaces == 8) {
+                               if (consecutive_spaces == ws_tab_width(ws_rule)) {
                                        strbuf_addch(dst, '\t');
                                        consecutive_spaces = 0;
                                }
@@ -363,12 +373,13 @@ void ws_fix_copy(struct strbuf *dst, const char *src, int len, unsigned ws_rule,
                fixed = 1;
        } else if ((ws_rule & WS_TAB_IN_INDENT) && last_tab_in_indent >= 0) {
                /* Expand tabs into spaces */
+               int start = dst->len;
                int last = last_tab_in_indent + 1;
                for (i = 0; i < last; i++) {
                        if (src[i] == '\t')
                                do {
                                        strbuf_addch(dst, ' ');
-                               } while (dst->len % 8);
+                               } while ((dst->len - start) % ws_tab_width(ws_rule));
                        else
                                strbuf_addch(dst, src[i]);
                }