- int in_continued_line = 0;
- int extra_newlines = 0;
- char *clean = talloc_strdup(ctx, "");
- const char *search_start = shader;
- const char *newline;
- while ((newline = strchr(search_start, '\n')) != NULL) {
- const char *backslash = NULL;
-
- /* # of characters preceding the newline. */
- int n = newline - shader;
-
- /* Find the preceding '\', if it exists */
- if (n >= 1 && newline[-1] == '\\')
- backslash = newline - 1;
- else if (n >= 2 && newline[-1] == '\r' && newline[-2] == '\\')
- backslash = newline - 2;
-
- /* Double backslashes don't count (the backslash is escaped) */
- if (backslash != NULL && backslash[-1] == '\\') {
- backslash = NULL;
- }
-
- if (backslash != NULL) {
- /* We found a line continuation, but do we care? */
- if (!in_continued_line) {
- if (in_directive(shader, backslash)) {
- in_continued_line = 1;
- extra_newlines = 0;
- }
- }
- if (in_continued_line) {
- /* Copy everything before the \ */
- clean = talloc_strndup_append(clean, shader, backslash - shader);
+ char *clean = ralloc_strdup(ctx, "");
+ const char *backslash, *newline, *search_start;
+ int collapsed_newlines = 0;
+
+ search_start = shader;
+
+ while (true) {
+ backslash = strchr(search_start, '\\');
+
+ /* If we have previously collapsed any line-continuations,
+ * then we want to insert additional newlines at the next
+ * occurrence of a newline character to avoid changing any
+ * line numbers.
+ */
+ if (collapsed_newlines) {
+ newline = strchr(search_start, '\n');
+ if (newline &&
+ (backslash == NULL || newline < backslash))
+ {
+ ralloc_strncat(&clean, shader,
+ newline - shader + 1);
+ while (collapsed_newlines--)
+ ralloc_strcat(&clean, "\n");