diff options
Diffstat (limited to 'src/Backtrace/fallback.c')
| -rw-r--r-- | src/Backtrace/fallback.c | 174 |
1 files changed, 0 insertions, 174 deletions
diff --git a/src/Backtrace/fallback.c b/src/Backtrace/fallback.c deleted file mode 100644 index 77a16283..00000000 --- a/src/Backtrace/fallback.c +++ /dev/null @@ -1,174 +0,0 @@ -/* - Copyright (C) 2009 RedHat inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. -*/ -#include "fallback.h" -#include <stdlib.h> -#include <stdbool.h> -#include <stdio.h> -#include <string.h> -#include <ctype.h> - -struct header -{ - struct strbuf *text; - struct header *next; -}; - -static struct header *header_new() -{ - struct header *head = malloc(sizeof(struct header)); - if (!head) - { - puts("Error while allocating memory for backtrace header."); - exit(5); - } - head->text = NULL; - head->next = NULL; - return head; -} - -/* Recursively frees siblings. */ -static void header_free(struct header *head) -{ - if (head->text) - strbuf_free(head->text); - if (head->next) - header_free(head->next); - free(head); -} - -/* Inserts new header to array if it is not already there. */ -static void header_set_insert(struct header *cur, struct strbuf *new) -{ - /* Duplicate found case. */ - if (strcmp(cur->text->buf, new->buf) == 0) - return; - - /* Last item case, insert new header here. */ - if (cur->next == NULL) - { - cur->next = header_new(); - cur->next->text = new; - return; - } - - /* Move to next item in array case. */ - header_set_insert(cur->next, new); -} - -struct strbuf *independent_backtrace(char *input) -{ - struct strbuf *header = strbuf_new(); - bool in_bracket = false; - bool in_quote = false; - bool in_header = false; - bool in_digit = false; - bool has_at = false; - bool has_filename = false; - bool has_bracket = false; - struct header *headers = NULL; - - const char *bk = input; - while (*bk) - { - if (bk[0] == '#' - && bk[1] >= '0' && bk[1] <= '7' - && bk[2] == ' ' /* take only #0...#7 (8 last stack frames) */ - && !in_quote) - { - if (in_header && !has_filename) - strbuf_clear(header); - in_header = true; - } - - if (!in_header) - { - ++bk; - continue; - } - - if (isdigit(*bk) && !in_quote && !has_at) - in_digit = true; - else if (bk[0] == '\\' && bk[1] == '\"') - bk++; - else if (*bk == '\"') - in_quote = in_quote == true ? false : true; - else if (*bk == '(' && !in_quote) - { - in_bracket = true; - in_digit = false; - strbuf_append_char(header, '('); - } - else if (*bk == ')' && !in_quote) - { - in_bracket = false; - has_bracket = true; - in_digit = false; - strbuf_append_char(header, '('); - } - else if (*bk == '\n' && has_filename) - { - if (headers == NULL) - { - headers = header_new(); - headers->text = header; - } - else - header_set_insert(headers, header); - - header = strbuf_new(); - in_bracket = false; - in_quote = false; - in_header = false; - in_digit = false; - has_at = false; - has_filename = false; - has_bracket = false; - } - else if (*bk == ',' && !in_quote) - in_digit = false; - else if (isspace(*bk) && !in_quote) - in_digit = false; - else if (bk[0] == 'a' && bk[1] == 't' && has_bracket && !in_quote) - { - has_at = true; - strbuf_append_char(header, 'a'); - } - else if (bk[0] == ':' && has_at && isdigit(bk[1]) && !in_quote) - has_filename = true; - else if (in_header && !in_digit && !in_quote && !in_bracket) - strbuf_append_char(header, *bk); - - bk++; - } - - strbuf_free(header); - - struct strbuf *result = strbuf_new(); - struct header *loop = headers; - while (loop) - { - strbuf_append_str(result, loop->text->buf); - strbuf_append_char(result, '\n'); - loop = loop->next; - } - - if (headers) - header_free(headers); /* recursive */ - - return result; -} |