be3636c679
After some research, the _GNU_SOURCE does not affect any function call anymore. To avoid future failures on other systems not using glibc, _GNU_SOURCE gets removed.
110 lines
2.7 KiB
C
110 lines
2.7 KiB
C
/* copyright 2013 Sascha Kruse and contributors (see LICENSE for licensing information) */
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#include "markup.h"
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#include <assert.h>
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#include <stdbool.h>
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#include "settings.h"
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#include "utils.h"
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static char *markup_quote(char *str)
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{
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assert(str != NULL);
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str = string_replace_all("&", "&", str);
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str = string_replace_all("\"", """, str);
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str = string_replace_all("'", "'", str);
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str = string_replace_all("<", "<", str);
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str = string_replace_all(">", ">", str);
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return str;
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}
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static char *markup_unquote(char *str)
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{
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assert(str != NULL);
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str = string_replace_all(""", "\"", str);
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str = string_replace_all("'", "'", str);
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str = string_replace_all("<", "<", str);
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str = string_replace_all(">", ">", str);
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str = string_replace_all("&", "&", str);
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return str;
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}
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static char *markup_br2nl(char *str)
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{
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assert(str != NULL);
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str = string_replace_all("<br>", "\n", str);
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str = string_replace_all("<br/>", "\n", str);
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str = string_replace_all("<br />", "\n", str);
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return str;
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}
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/*
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* Strip any markup from text; turn it in to plain text.
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*
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* For well-formed markup, the following two commands should be
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* roughly equivalent:
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*
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* out = markup_strip(in);
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* pango_parse_markup(in, -1, 0, NULL, &out, NULL, NULL);
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*
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* However, `pango_parse_markup()` balks at invalid markup;
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* `markup_strip()` shouldn't care if there is invalid markup.
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*/
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char *markup_strip(char *str)
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{
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if (str == NULL) {
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return NULL;
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}
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/* strip all tags */
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string_strip_delimited(str, '<', '>');
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/* unquote the remainder */
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str = markup_unquote(str);
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return str;
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}
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/*
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* Transform the string in accordance with `markup_mode` and
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* `settings.ignore_newline`
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*/
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char *markup_transform(char *str, enum markup_mode markup_mode)
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{
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if (str == NULL) {
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return NULL;
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}
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switch (markup_mode) {
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case MARKUP_NULL:
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/* `assert(false)`, but with a meaningful error message */
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assert(markup_mode != MARKUP_NULL);
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break;
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case MARKUP_NO:
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str = markup_quote(str);
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break;
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case MARKUP_STRIP:
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str = markup_br2nl(str);
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str = markup_strip(str);
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str = markup_quote(str);
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break;
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case MARKUP_FULL:
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str = markup_br2nl(str);
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break;
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}
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if (settings.ignore_newline) {
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str = string_replace_all("\n", " ", str);
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}
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return str;
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}
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/* vim: set tabstop=8 shiftwidth=8 expandtab textwidth=0: */
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