mirror of
https://github.com/rkd77/elinks.git
synced 2024-12-04 14:46:47 -05:00
document/dom: Split rendering utilities to util.*
These are functions that are commonly used by the individual renderers to put stuff on the canvas etc.
This commit is contained in:
Petr Baudis
Petr Baudis
parent
f88f49d955
commit
144bd77240
@ -1,6 +1,6 @@
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top_builddir=../../..
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include $(top_builddir)/Makefile.config
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OBJS = renderer.o
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OBJS = renderer.o util.o
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include $(top_srcdir)/Makefile.lib
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@ -12,15 +12,14 @@
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#include "elinks.h"
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#include "bookmarks/bookmarks.h" /* get_bookmark() */
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#include "cache/cache.h"
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#include "document/css/css.h"
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#include "document/css/parser.h"
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#include "document/css/property.h"
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#include "document/css/stylesheet.h"
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#include "document/docdata.h"
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#include "document/document.h"
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#include "document/dom/renderer.h"
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#include "document/dom/util.h"
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#include "document/renderer.h"
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#include "dom/configuration.h"
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#include "dom/scanner.h"
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@ -30,60 +29,17 @@
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#include "dom/node.h"
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#include "dom/stack.h"
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#include "intl/charsets.h"
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#include "globhist/globhist.h" /* get_global_history_item() */
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#include "protocol/uri.h"
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#include "terminal/draw.h"
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#include "util/box.h"
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#include "util/error.h"
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#include "util/memory.h"
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#include "util/snprintf.h"
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#include "util/string.h"
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struct dom_renderer {
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enum sgml_document_type doctype;
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struct document *document;
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struct conv_table *convert_table;
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enum convert_string_mode convert_mode;
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struct uri *base_uri;
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unsigned char *source;
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unsigned char *end;
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unsigned char *position;
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int canvas_x, canvas_y;
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#ifdef HAVE_REGEX_H
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regex_t url_regex;
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unsigned int find_url:1;
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#endif
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struct screen_char styles[DOM_NODES];
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/* RSS renderer variables */
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struct dom_node *channel;
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struct dom_node_list *items;
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struct dom_node *item;
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struct dom_node *node;
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struct dom_string text;
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};
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#define URL_REGEX "(file://|((f|ht|nt)tp(s)?|smb)://[[:alnum:]]+([-@:.]?[[:alnum:]])*\\.[[:alpha:]]{2,4}(:[[:digit:]]+)?)(/(%[[:xdigit:]]{2}|[-_~&=;?.a-z0-9])*)*"
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#define URL_REGFLAGS (REG_ICASE | REG_EXTENDED)
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static void
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init_template(struct screen_char *template, struct document_options *options,
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color_T background, color_T foreground, enum screen_char_attr attr)
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{
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struct color_pair colors = INIT_COLOR_PAIR(background, foreground);
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template->attr = attr;
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template->data = ' ';
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set_term_color(template, &colors,
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options->color_flags, options->color_mode);
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}
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/* Checks the user CSS for properties for each DOM node type name */
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static inline void
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@ -200,245 +156,6 @@ done_dom_renderer(struct dom_renderer *renderer)
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}
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/* Document maintainance */
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static struct screen_char *
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realloc_line(struct document *document, int x, int y)
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{
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struct line *line = realloc_lines(document, y);
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if (!line) return NULL;
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if (x > line->length) {
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if (!ALIGN_LINE(&line->chars, line->length, x))
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return NULL;
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for (; line->length < x; line->length++) {
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line->chars[line->length].data = ' ';
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}
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if (x > document->width) document->width = x;
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}
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return line->chars;
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}
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static struct node *
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add_search_node(struct dom_renderer *renderer, int width)
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{
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struct node *node = mem_alloc(sizeof(*node));
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if (node) {
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set_box(&node->box, renderer->canvas_x, renderer->canvas_y,
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width, 1);
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add_to_list(renderer->document->nodes, node);
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}
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return node;
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}
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#define X(renderer) ((renderer)->canvas_x)
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#define Y(renderer) ((renderer)->canvas_y)
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#define POS(renderer) (&(renderer)->document->data[Y(renderer)].chars[X(renderer)])
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#define WIDTH(renderer, add) ((renderer)->canvas_x + (add))
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static void
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render_dom_line(struct dom_renderer *renderer, struct screen_char *template,
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unsigned char *string, int length)
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{
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struct document *document = renderer->document;
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struct conv_table *convert = renderer->convert_table;
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enum convert_string_mode mode = renderer->convert_mode;
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int x, charlen;
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#ifdef CONFIG_UTF8
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int utf8 = document->options.utf8;
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unsigned char *end;
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#endif /* CONFIG_UTF8 */
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assert(renderer && template && string && length);
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string = convert_string(convert, string, length, document->options.cp,
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mode, &length, NULL, NULL);
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if (!string) return;
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if (!realloc_line(document, WIDTH(renderer, length), Y(renderer))) {
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mem_free(string);
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return;
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}
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add_search_node(renderer, length);
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#ifdef CONFIG_UTF8
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end = string + length;
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#endif /* CONFIG_UTF8 */
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for (x = 0, charlen = 1; x < length;x += charlen, renderer->canvas_x++) {
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unsigned char *text = &string[x];
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/* This is mostly to be able to break out so the indentation
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* level won't get to high. */
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switch (*text) {
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case ASCII_TAB:
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{
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int tab_width = 7 - (X(renderer) & 7);
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int width = WIDTH(renderer, length - x + tab_width);
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template->data = ' ';
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if (!realloc_line(document, width, Y(renderer)))
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break;
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/* Only loop over the expanded tab chars and let the
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* ``main loop'' add the actual tab char. */
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for (; tab_width-- > 0; renderer->canvas_x++)
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copy_screen_chars(POS(renderer), template, 1);
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charlen = 1;
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break;
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}
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default:
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#ifdef CONFIG_UTF8
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if (utf8) {
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unicode_val_T data;
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charlen = utf8charlen(text);
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data = utf8_to_unicode(&text, end);
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template->data = (unicode_val_T)data;
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if (unicode_to_cell(data) == 2) {
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copy_screen_chars(POS(renderer),
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template, 1);
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X(renderer)++;
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template->data = UCS_NO_CHAR;
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}
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} else
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#endif /* CONFIG_UTF8 */
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template->data = isscreensafe(*text) ? *text:'.';
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}
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copy_screen_chars(POS(renderer), template, 1);
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}
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mem_free(string);
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}
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static inline unsigned char *
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split_dom_line(unsigned char *line, int length, int *linelen)
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{
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unsigned char *end = line + length;
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unsigned char *pos;
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/* End of line detection.
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* We handle \r, \r\n and \n types here. */
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for (pos = line; pos < end; pos++) {
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int step = 0;
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if (pos[step] == ASCII_CR)
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step++;
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if (pos[step] == ASCII_LF)
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step++;
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if (step) {
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*linelen = pos - line;
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return pos + step;
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}
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}
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*linelen = length;
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return NULL;
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}
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static void
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render_dom_text(struct dom_renderer *renderer, struct screen_char *template,
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unsigned char *string, int length)
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{
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int linelen;
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for (; length > 0; string += linelen, length -= linelen) {
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unsigned char *newline = split_dom_line(string, length, &linelen);
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if (linelen)
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render_dom_line(renderer, template, string, linelen);
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if (newline) {
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renderer->canvas_y++;
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renderer->canvas_x = 0;
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linelen = newline - string;
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}
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}
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}
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#define realloc_document_links(doc, size) \
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ALIGN_LINK(&(doc)->links, (doc)->nlinks, size)
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static inline struct link *
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add_dom_link(struct dom_renderer *renderer, unsigned char *string, int length,
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unsigned char *uristring, int urilength)
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{
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struct document *document = renderer->document;
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int x = renderer->canvas_x;
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int y = renderer->canvas_y;
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unsigned char *where;
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struct link *link;
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struct point *point;
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struct screen_char template;
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color_T fgcolor;
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if (!realloc_document_links(document, document->nlinks + 1))
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return NULL;
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link = &document->links[document->nlinks];
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if (!realloc_points(link, length))
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return NULL;
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uristring = convert_string(renderer->convert_table,
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uristring, urilength, document->options.cp,
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CSM_DEFAULT, NULL, NULL, NULL);
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if (!uristring) return NULL;
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where = join_urls(renderer->base_uri, uristring);
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mem_free(uristring);
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if (!where)
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return NULL;
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#ifdef CONFIG_GLOBHIST
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else if (get_global_history_item(where))
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fgcolor = document->options.default_vlink;
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#endif
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#ifdef CONFIG_BOOKMARKS
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else if (get_bookmark(where))
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fgcolor = document->options.default_bookmark_link;
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#endif
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else
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fgcolor = document->options.default_link;
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link->npoints = length;
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link->type = LINK_HYPERTEXT;
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link->where = where;
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link->color.background = document->options.default_bg;
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link->color.foreground = fgcolor;
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link->number = document->nlinks;
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init_template(&template, &document->options,
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link->color.background, link->color.foreground, 0);
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render_dom_text(renderer, &template, string, length);
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for (point = link->points; length > 0; length--, point++, x++) {
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point->x = x;
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point->y = y;
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}
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document->nlinks++;
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document->links_sorted = 0;
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return link;
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}
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/* DOM Source Renderer */
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#define check_dom_node_source(renderer, str, len) \
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273
src/document/dom/util.c
Normal file
273
src/document/dom/util.c
Normal file
@ -0,0 +1,273 @@
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/* Utilities for rendering document bits */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <sys/types.h> /* FreeBSD needs this before regex.h */
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#ifdef HAVE_REGEX_H
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#include <regex.h>
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#endif
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#include <string.h>
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#include "elinks.h"
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#include "bookmarks/bookmarks.h" /* get_bookmark() */
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#include "document/docdata.h"
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#include "document/document.h"
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#include "document/dom/util.h"
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#include "intl/charsets.h"
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#include "globhist/globhist.h" /* get_global_history_item() */
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#include "protocol/uri.h"
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#include "terminal/draw.h"
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#include "util/error.h"
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#include "util/memory.h"
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#include "util/box.h"
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inline void
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init_template(struct screen_char *template, struct document_options *options,
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color_T background, color_T foreground, enum screen_char_attr attr)
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{
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struct color_pair colors = INIT_COLOR_PAIR(background, foreground);
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template->attr = attr;
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template->data = ' ';
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set_term_color(template, &colors,
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options->color_flags, options->color_mode);
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}
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static struct screen_char *
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realloc_line(struct document *document, int x, int y)
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{
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struct line *line = realloc_lines(document, y);
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if (!line) return NULL;
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if (x > line->length) {
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if (!ALIGN_LINE(&line->chars, line->length, x))
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return NULL;
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for (; line->length < x; line->length++) {
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line->chars[line->length].data = ' ';
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}
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if (x > document->width) document->width = x;
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}
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return line->chars;
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}
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static struct node *
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add_search_node(struct dom_renderer *renderer, int width)
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{
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struct node *node = mem_alloc(sizeof(*node));
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if (node) {
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set_box(&node->box, renderer->canvas_x, renderer->canvas_y,
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width, 1);
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add_to_list(renderer->document->nodes, node);
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}
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return node;
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}
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#define POS(renderer) (&(renderer)->document->data[Y(renderer)].chars[X(renderer)])
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#define WIDTH(renderer, add) ((renderer)->canvas_x + (add))
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static void
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render_dom_line(struct dom_renderer *renderer, struct screen_char *template,
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unsigned char *string, int length)
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{
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struct document *document = renderer->document;
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struct conv_table *convert = renderer->convert_table;
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enum convert_string_mode mode = renderer->convert_mode;
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int x, charlen;
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#ifdef CONFIG_UTF8
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int utf8 = document->options.utf8;
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unsigned char *end;
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#endif /* CONFIG_UTF8 */
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assert(renderer && template && string && length);
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string = convert_string(convert, string, length, document->options.cp,
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mode, &length, NULL, NULL);
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if (!string) return;
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if (!realloc_line(document, WIDTH(renderer, length), Y(renderer))) {
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mem_free(string);
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return;
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}
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add_search_node(renderer, length);
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#ifdef CONFIG_UTF8
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end = string + length;
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#endif /* CONFIG_UTF8 */
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for (x = 0, charlen = 1; x < length;x += charlen, renderer->canvas_x++) {
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unsigned char *text = &string[x];
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/* This is mostly to be able to break out so the indentation
|
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* level won't get to high. */
|
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switch (*text) {
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case ASCII_TAB:
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{
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int tab_width = 7 - (X(renderer) & 7);
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int width = WIDTH(renderer, length - x + tab_width);
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template->data = ' ';
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if (!realloc_line(document, width, Y(renderer)))
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break;
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/* Only loop over the expanded tab chars and let the
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* ``main loop'' add the actual tab char. */
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for (; tab_width-- > 0; renderer->canvas_x++)
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copy_screen_chars(POS(renderer), template, 1);
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charlen = 1;
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break;
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}
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default:
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#ifdef CONFIG_UTF8
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if (utf8) {
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unicode_val_T data;
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charlen = utf8charlen(text);
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data = utf8_to_unicode(&text, end);
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template->data = (unicode_val_T)data;
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if (unicode_to_cell(data) == 2) {
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copy_screen_chars(POS(renderer),
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template, 1);
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X(renderer)++;
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template->data = UCS_NO_CHAR;
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}
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} else
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#endif /* CONFIG_UTF8 */
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template->data = isscreensafe(*text) ? *text:'.';
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}
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copy_screen_chars(POS(renderer), template, 1);
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}
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mem_free(string);
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}
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static inline unsigned char *
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split_dom_line(unsigned char *line, int length, int *linelen)
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{
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unsigned char *end = line + length;
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unsigned char *pos;
|
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|
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/* End of line detection.
|
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* We handle \r, \r\n and \n types here. */
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for (pos = line; pos < end; pos++) {
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int step = 0;
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if (pos[step] == ASCII_CR)
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step++;
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if (pos[step] == ASCII_LF)
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step++;
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if (step) {
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*linelen = pos - line;
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return pos + step;
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}
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}
|
||||
|
||||
*linelen = length;
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void
|
||||
render_dom_text(struct dom_renderer *renderer, struct screen_char *template,
|
||||
unsigned char *string, int length)
|
||||
{
|
||||
int linelen;
|
||||
|
||||
for (; length > 0; string += linelen, length -= linelen) {
|
||||
unsigned char *newline = split_dom_line(string, length, &linelen);
|
||||
|
||||
if (linelen)
|
||||
render_dom_line(renderer, template, string, linelen);
|
||||
|
||||
if (newline) {
|
||||
renderer->canvas_y++;
|
||||
renderer->canvas_x = 0;
|
||||
linelen = newline - string;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#define realloc_document_links(doc, size) \
|
||||
ALIGN_LINK(&(doc)->links, (doc)->nlinks, size)
|
||||
|
||||
inline struct link *
|
||||
add_dom_link(struct dom_renderer *renderer, unsigned char *string, int length,
|
||||
unsigned char *uristring, int urilength)
|
||||
{
|
||||
struct document *document = renderer->document;
|
||||
int x = renderer->canvas_x;
|
||||
int y = renderer->canvas_y;
|
||||
unsigned char *where;
|
||||
struct link *link;
|
||||
struct point *point;
|
||||
struct screen_char template;
|
||||
color_T fgcolor;
|
||||
|
||||
if (!realloc_document_links(document, document->nlinks + 1))
|
||||
return NULL;
|
||||
|
||||
link = &document->links[document->nlinks];
|
||||
|
||||
if (!realloc_points(link, length))
|
||||
return NULL;
|
||||
|
||||
uristring = convert_string(renderer->convert_table,
|
||||
uristring, urilength, document->options.cp,
|
||||
CSM_DEFAULT, NULL, NULL, NULL);
|
||||
if (!uristring) return NULL;
|
||||
|
||||
where = join_urls(renderer->base_uri, uristring);
|
||||
|
||||
mem_free(uristring);
|
||||
|
||||
if (!where)
|
||||
return NULL;
|
||||
#ifdef CONFIG_GLOBHIST
|
||||
else if (get_global_history_item(where))
|
||||
fgcolor = document->options.default_vlink;
|
||||
#endif
|
||||
#ifdef CONFIG_BOOKMARKS
|
||||
else if (get_bookmark(where))
|
||||
fgcolor = document->options.default_bookmark_link;
|
||||
#endif
|
||||
else
|
||||
fgcolor = document->options.default_link;
|
||||
|
||||
link->npoints = length;
|
||||
link->type = LINK_HYPERTEXT;
|
||||
link->where = where;
|
||||
link->color.background = document->options.default_bg;
|
||||
link->color.foreground = fgcolor;
|
||||
link->number = document->nlinks;
|
||||
|
||||
init_template(&template, &document->options,
|
||||
link->color.background, link->color.foreground, 0);
|
||||
|
||||
render_dom_text(renderer, &template, string, length);
|
||||
|
||||
for (point = link->points; length > 0; length--, point++, x++) {
|
||||
point->x = x;
|
||||
point->y = y;
|
||||
}
|
||||
|
||||
document->nlinks++;
|
||||
document->links_sorted = 0;
|
||||
|
||||
return link;
|
||||
}
|
||||
64
src/document/dom/util.h
Normal file
64
src/document/dom/util.h
Normal file
@ -0,0 +1,64 @@
|
||||
#ifndef EL__DOCUMENT_DOM_UTIL_H
|
||||
#define EL__DOCUMENT_DOM_UTIL_H
|
||||
|
||||
/* This header is meant to be used only amongst the DOM renderers. */
|
||||
|
||||
#include <sys/types.h> /* FreeBSD needs this before regex.h */
|
||||
#ifdef HAVE_REGEX_H
|
||||
#include <regex.h>
|
||||
#endif
|
||||
|
||||
#include "dom/sgml/sgml.h"
|
||||
#include "intl/charsets.h"
|
||||
#include "terminal/draw.h"
|
||||
|
||||
|
||||
struct document;
|
||||
struct uri;
|
||||
struct dom_node;
|
||||
struct dom_node_list;
|
||||
struct dom_string;
|
||||
|
||||
struct dom_renderer {
|
||||
enum sgml_document_type doctype;
|
||||
struct document *document;
|
||||
|
||||
struct conv_table *convert_table;
|
||||
enum convert_string_mode convert_mode;
|
||||
|
||||
struct uri *base_uri;
|
||||
|
||||
unsigned char *source;
|
||||
unsigned char *end;
|
||||
|
||||
unsigned char *position;
|
||||
int canvas_x, canvas_y;
|
||||
|
||||
#ifdef HAVE_REGEX_H
|
||||
regex_t url_regex;
|
||||
unsigned int find_url:1;
|
||||
#endif
|
||||
struct screen_char styles[DOM_NODES];
|
||||
|
||||
/* RSS renderer variables */
|
||||
struct dom_node *channel;
|
||||
struct dom_node_list *items;
|
||||
struct dom_node *item;
|
||||
struct dom_node *node;
|
||||
struct dom_string text;
|
||||
};
|
||||
|
||||
#define X(renderer) ((renderer)->canvas_x)
|
||||
#define Y(renderer) ((renderer)->canvas_y)
|
||||
|
||||
|
||||
void init_template(struct screen_char *template,
|
||||
struct document_options *options,
|
||||
color_T background, color_T foreground,
|
||||
enum screen_char_attr attr);
|
||||
void render_dom_text(struct dom_renderer *renderer, struct screen_char *template,
|
||||
unsigned char *string, int length);
|
||||
struct link *add_dom_link(struct dom_renderer *renderer, unsigned char *string,
|
||||
int length, unsigned char *uristring, int urilength);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in New Issue
Block a user