* Licensed under the MIT License,
* http://opensource.org/licenses/mit-license.php
* Copyright 2008-2009 James Bursa <james@semichrome.net>
+ * Copyright 2012 Daniel Silverstone <dsilvers@netsurf-browser.org>
*/
-#define _GNU_SOURCE /* for strndup */
#include <assert.h>
#include <math.h>
#include <setjmp.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
-#include <libxml/parser.h>
-#include <libxml/debugXML.h>
+
+#include <dom/dom.h>
+#include <dom/bindings/xml/xmlparser.h>
+
#include "svgtiny.h"
#include "svgtiny_internal.h"
#define KAPPA 0.5522847498
-static svgtiny_code svgtiny_parse_svg(xmlNode *svg,
+static svgtiny_code svgtiny_parse_svg(dom_element *svg,
struct svgtiny_parse_state state);
-static svgtiny_code svgtiny_parse_path(xmlNode *path,
+static svgtiny_code svgtiny_parse_path(dom_element *path,
struct svgtiny_parse_state state);
-static svgtiny_code svgtiny_parse_rect(xmlNode *rect,
+static svgtiny_code svgtiny_parse_rect(dom_element *rect,
struct svgtiny_parse_state state);
-static svgtiny_code svgtiny_parse_circle(xmlNode *circle,
+static svgtiny_code svgtiny_parse_circle(dom_element *circle,
struct svgtiny_parse_state state);
-static svgtiny_code svgtiny_parse_ellipse(xmlNode *ellipse,
+static svgtiny_code svgtiny_parse_ellipse(dom_element *ellipse,
struct svgtiny_parse_state state);
-static svgtiny_code svgtiny_parse_line(xmlNode *line,
+static svgtiny_code svgtiny_parse_line(dom_element *line,
struct svgtiny_parse_state state);
-static svgtiny_code svgtiny_parse_poly(xmlNode *poly,
+static svgtiny_code svgtiny_parse_poly(dom_element *poly,
struct svgtiny_parse_state state, bool polygon);
-static svgtiny_code svgtiny_parse_text(xmlNode *text,
+static svgtiny_code svgtiny_parse_text(dom_element *text,
struct svgtiny_parse_state state);
-static void svgtiny_parse_position_attributes(const xmlNode *node,
+static void svgtiny_parse_position_attributes(const dom_element *node,
const struct svgtiny_parse_state state,
float *x, float *y, float *width, float *height);
-static void svgtiny_parse_paint_attributes(const xmlNode *node,
+static void svgtiny_parse_paint_attributes(const dom_element *node,
struct svgtiny_parse_state *state);
-static void svgtiny_parse_font_attributes(const xmlNode *node,
+static void svgtiny_parse_font_attributes(const dom_element *node,
struct svgtiny_parse_state *state);
-static void svgtiny_parse_transform_attributes(xmlNode *node,
+static void svgtiny_parse_transform_attributes(dom_element *node,
struct svgtiny_parse_state *state);
static svgtiny_code svgtiny_add_path(float *p, unsigned int n,
struct svgtiny_parse_state *state);
{
struct svgtiny_diagram *diagram;
- diagram = malloc(sizeof *diagram);
+ diagram = calloc(sizeof(*diagram), 1);
if (!diagram)
return 0;
- diagram->shape = 0;
- diagram->shape_count = 0;
- diagram->error_line = 0;
- diagram->error_message = 0;
-
return diagram;
+ free(diagram);
+ return NULL;
}
+static void ignore_msg(uint32_t severity, void *ctx, const char *msg, ...)
+{
+ UNUSED(severity);
+ UNUSED(ctx);
+ UNUSED(msg);
+}
/**
* Parse a block of memory into a svgtiny_diagram.
const char *buffer, size_t size, const char *url,
int viewport_width, int viewport_height)
{
- xmlDoc *document;
- xmlNode *svg;
+ dom_document *document;
+ dom_exception exc;
+ dom_xml_parser *parser;
+ dom_xml_error err;
+ dom_element *svg;
+ dom_string *svg_name;
+ lwc_string *svg_name_lwc;
struct svgtiny_parse_state state;
float x, y, width, height;
svgtiny_code code;
assert(buffer);
assert(url);
- /* parse XML to tree */
- document = xmlReadMemory(buffer, size, url, 0,
- XML_PARSE_NONET | XML_PARSE_COMPACT);
- if (!document)
- return svgtiny_LIBXML_ERROR;
+ UNUSED(url);
+
+ parser = dom_xml_parser_create(NULL, NULL,
+ ignore_msg, NULL, &document);
- /*xmlDebugDumpDocument(stderr, document);*/
+ if (parser == NULL)
+ return svgtiny_LIBDOM_ERROR;
+
+ err = dom_xml_parser_parse_chunk(parser, (uint8_t *)buffer, size);
+ if (err != DOM_XML_OK) {
+ dom_node_unref(document);
+ dom_xml_parser_destroy(parser);
+ return svgtiny_LIBDOM_ERROR;
+ }
+
+ err = dom_xml_parser_completed(parser);
+ if (err != DOM_XML_OK) {
+ dom_node_unref(document);
+ dom_xml_parser_destroy(parser);
+ return svgtiny_LIBDOM_ERROR;
+ }
+
+ /* We're done parsing, drop the parser.
+ * We now own the document entirely.
+ */
+ dom_xml_parser_destroy(parser);
/* find root <svg> element */
- svg = xmlDocGetRootElement(document);
- if (!svg)
- return svgtiny_NOT_SVG;
- if (strcmp((const char *) svg->name, "svg") != 0)
+ exc = dom_document_get_document_element(document, &svg);
+ if (exc != DOM_NO_ERR) {
+ dom_node_unref(document);
+ return svgtiny_LIBDOM_ERROR;
+ }
+ exc = dom_node_get_node_name(svg, &svg_name);
+ if (exc != DOM_NO_ERR) {
+ dom_node_unref(svg);
+ dom_node_unref(document);
+ return svgtiny_LIBDOM_ERROR;
+ }
+ if (lwc_intern_string("svg", 3 /* SLEN("svg") */,
+ &svg_name_lwc) != lwc_error_ok) {
+ dom_string_unref(svg_name);
+ dom_node_unref(svg);
+ dom_node_unref(document);
+ return svgtiny_LIBDOM_ERROR;
+ }
+ if (!dom_string_caseless_lwc_isequal(svg_name, svg_name_lwc)) {
+ lwc_string_unref(svg_name_lwc);
+ dom_string_unref(svg_name);
+ dom_node_unref(svg);
+ dom_node_unref(document);
return svgtiny_NOT_SVG;
+ }
+
+ lwc_string_unref(svg_name_lwc);
+ dom_string_unref(svg_name);
/* get graphic dimensions */
state.diagram = diagram;
state.document = document;
state.viewport_width = viewport_width;
state.viewport_height = viewport_height;
+
+#define SVGTINY_STRING_ACTION(s) \
+ if (dom_string_create_interned((const uint8_t *) #s, \
+ strlen(#s), &state.interned_##s) \
+ != DOM_NO_ERR) { \
+ code = svgtiny_LIBDOM_ERROR; \
+ goto cleanup; \
+ }
+#include "svgtiny_strings.h"
+#undef SVGTINY_STRING_ACTION
+
svgtiny_parse_position_attributes(svg, state, &x, &y, &width, &height);
diagram->width = width;
diagram->height = height;
/* parse tree */
code = svgtiny_parse_svg(svg, state);
- /* free XML tree */
- xmlFreeDoc(document);
+ dom_node_unref(svg);
+ dom_node_unref(document);
+cleanup:
+#define SVGTINY_STRING_ACTION(s) \
+ if (state.interned_##s != NULL) \
+ dom_string_unref(state.interned_##s);
+//#include "svgtiny_strings.h"
+#undef SVGTINY_STRING_ACTION
return code;
}
* Parse a <svg> or <g> element node.
*/
-svgtiny_code svgtiny_parse_svg(xmlNode *svg,
+svgtiny_code svgtiny_parse_svg(dom_element *svg,
struct svgtiny_parse_state state)
{
float x, y, width, height;
+ dom_string *view_box;
+ dom_element *child;
+ dom_exception exc;
svgtiny_parse_position_attributes(svg, state, &x, &y, &width, &height);
svgtiny_parse_paint_attributes(svg, &state);
svgtiny_parse_font_attributes(svg, &state);
- /* parse viewBox */
- xmlAttr *view_box = xmlHasProp(svg, (const xmlChar *) "viewBox");
+ exc = dom_element_get_attribute(svg, state.interned_viewBox,
+ &view_box);
+ if (exc != DOM_NO_ERR) {
+ return svgtiny_LIBDOM_ERROR;
+ }
+
if (view_box) {
- const char *s = (const char *) view_box->children->content;
+ char *s = strndup(dom_string_data(view_box),
+ dom_string_length(view_box));
float min_x, min_y, vwidth, vheight;
if (sscanf(s, "%f,%f,%f,%f",
&min_x, &min_y, &vwidth, &vheight) == 4 ||
state.ctm.e += -min_x * state.ctm.a;
state.ctm.f += -min_y * state.ctm.d;
}
+ free(s);
+ dom_string_unref(view_box);
}
svgtiny_parse_transform_attributes(svg, &state);
- for (xmlNode *child = svg->children; child; child = child->next) {
+ exc = dom_node_get_first_child(svg, &child);
+ if (exc != DOM_NO_ERR) {
+ return svgtiny_LIBDOM_ERROR;
+ }
+ while (child != NULL) {
+ dom_element *next;
+ dom_node_type nodetype;
svgtiny_code code = svgtiny_OK;
- if (child->type == XML_ELEMENT_NODE) {
- const char *name = (const char *) child->name;
- if (strcmp(name, "svg") == 0)
+ exc = dom_node_get_node_type(child, &nodetype);
+ if (exc != DOM_NO_ERR) {
+ dom_node_unref(child);
+ return svgtiny_LIBDOM_ERROR;
+ }
+ if (nodetype == DOM_ELEMENT_NODE) {
+ dom_string *nodename;
+ exc = dom_node_get_node_name(child, &nodename);
+ if (exc != DOM_NO_ERR) {
+ dom_node_unref(child);
+ return svgtiny_LIBDOM_ERROR;
+ }
+ if (dom_string_caseless_isequal(state.interned_svg,
+ nodename))
code = svgtiny_parse_svg(child, state);
- else if (strcmp(name, "g") == 0)
+ else if (dom_string_caseless_isequal(state.interned_g,
+ nodename))
code = svgtiny_parse_svg(child, state);
- else if (strcmp(name, "a") == 0)
+ else if (dom_string_caseless_isequal(state.interned_a,
+ nodename))
code = svgtiny_parse_svg(child, state);
- else if (strcmp(name, "path") == 0)
+ else if (dom_string_caseless_isequal(state.interned_path,
+ nodename))
code = svgtiny_parse_path(child, state);
- else if (strcmp(name, "rect") == 0)
+ else if (dom_string_caseless_isequal(state.interned_rect,
+ nodename))
code = svgtiny_parse_rect(child, state);
- else if (strcmp(name, "circle") == 0)
+ else if (dom_string_caseless_isequal(state.interned_circle,
+ nodename))
code = svgtiny_parse_circle(child, state);
- else if (strcmp(name, "ellipse") == 0)
+ else if (dom_string_caseless_isequal(state.interned_ellipse,
+ nodename))
code = svgtiny_parse_ellipse(child, state);
- else if (strcmp(name, "line") == 0)
+ else if (dom_string_caseless_isequal(state.interned_line,
+ nodename))
code = svgtiny_parse_line(child, state);
- else if (strcmp(name, "polyline") == 0)
+ else if (dom_string_caseless_isequal(state.interned_polyline,
+ nodename))
code = svgtiny_parse_poly(child, state, false);
- else if (strcmp(name, "polygon") == 0)
+ else if (dom_string_caseless_isequal(state.interned_polygon,
+ nodename))
code = svgtiny_parse_poly(child, state, true);
- else if (strcmp(name, "text") == 0)
+ else if (dom_string_caseless_isequal(state.interned_text,
+ nodename))
code = svgtiny_parse_text(child, state);
+ dom_string_unref(nodename);
}
-
- if (code != svgtiny_OK)
+ if (code != svgtiny_OK) {
+ dom_node_unref(child);
return code;
+ }
+ exc = dom_node_get_next_sibling(child, &next);
+ dom_node_unref(child);
+ if (exc != DOM_NO_ERR) {
+ return svgtiny_LIBDOM_ERROR;
+ }
+ child = next;
}
return svgtiny_OK;
* http://www.w3.org/TR/SVG11/paths#PathElement
*/
-svgtiny_code svgtiny_parse_path(xmlNode *path,
+svgtiny_code svgtiny_parse_path(dom_element *path,
struct svgtiny_parse_state state)
{
char *s, *path_d;
+ float *p;
+ unsigned int i;
+ float last_x = 0, last_y = 0;
+ float last_cubic_x = 0, last_cubic_y = 0;
+ float last_quad_x = 0, last_quad_y = 0;
svgtiny_parse_paint_attributes(path, &state);
svgtiny_parse_transform_attributes(path, &state);
}
/* allocate space for path: it will never have more elements than d */
- float *p = malloc(sizeof p[0] * strlen(s));
+ p = malloc(sizeof p[0] * strlen(s));
if (!p)
return svgtiny_OUT_OF_MEMORY;
/* parse d and build path */
- for (unsigned int i = 0; s[i]; i++)
+ for (i = 0; s[i]; i++)
if (s[i] == ',')
s[i] = ' ';
- unsigned int i = 0;
- float last_x = 0, last_y = 0;
- float last_cubic_x = 0, last_cubic_y = 0;
- float last_quad_x = 0, last_quad_y = 0;
+ i = 0;
while (*s) {
char command[2];
int plot_command;
* http://www.w3.org/TR/SVG11/shapes#RectElement
*/
-svgtiny_code svgtiny_parse_rect(xmlNode *rect,
+svgtiny_code svgtiny_parse_rect(dom_element *rect,
struct svgtiny_parse_state state)
{
float x, y, width, height;
+ float *p;
svgtiny_parse_position_attributes(rect, state,
&x, &y, &width, &height);
svgtiny_parse_paint_attributes(rect, &state);
svgtiny_parse_transform_attributes(rect, &state);
- float *p = malloc(13 * sizeof p[0]);
+ p = malloc(13 * sizeof p[0]);
if (!p)
return svgtiny_OUT_OF_MEMORY;
* Parse a <circle> element node.
*/
-svgtiny_code svgtiny_parse_circle(xmlNode *circle,
+svgtiny_code svgtiny_parse_circle(dom_element *circle,
struct svgtiny_parse_state state)
{
float x = 0, y = 0, r = -1;
+ float *p;
+ xmlAttr *attr;
- for (xmlAttr *attr = circle->properties; attr; attr = attr->next) {
+ for (attr = circle->properties; attr; attr = attr->next) {
const char *name = (const char *) attr->name;
const char *content = (const char *) attr->children->content;
if (strcmp(name, "cx") == 0)
if (r == 0)
return svgtiny_OK;
- float *p = malloc(32 * sizeof p[0]);
+ p = malloc(32 * sizeof p[0]);
if (!p)
return svgtiny_OUT_OF_MEMORY;
* Parse an <ellipse> element node.
*/
-svgtiny_code svgtiny_parse_ellipse(xmlNode *ellipse,
+svgtiny_code svgtiny_parse_ellipse(dom_element *ellipse,
struct svgtiny_parse_state state)
{
float x = 0, y = 0, rx = -1, ry = -1;
+ float *p;
+ xmlAttr *attr;
- for (xmlAttr *attr = ellipse->properties; attr; attr = attr->next) {
+ for (attr = ellipse->properties; attr; attr = attr->next) {
const char *name = (const char *) attr->name;
const char *content = (const char *) attr->children->content;
if (strcmp(name, "cx") == 0)
if (rx == 0 || ry == 0)
return svgtiny_OK;
- float *p = malloc(32 * sizeof p[0]);
+ p = malloc(32 * sizeof p[0]);
if (!p)
return svgtiny_OUT_OF_MEMORY;
* Parse a <line> element node.
*/
-svgtiny_code svgtiny_parse_line(xmlNode *line,
+svgtiny_code svgtiny_parse_line(dom_element *line,
struct svgtiny_parse_state state)
{
float x1 = 0, y1 = 0, x2 = 0, y2 = 0;
+ float *p;
+ xmlAttr *attr;
- for (xmlAttr *attr = line->properties; attr; attr = attr->next) {
+ for (attr = line->properties; attr; attr = attr->next) {
const char *name = (const char *) attr->name;
const char *content = (const char *) attr->children->content;
if (strcmp(name, "x1") == 0)
svgtiny_parse_paint_attributes(line, &state);
svgtiny_parse_transform_attributes(line, &state);
- float *p = malloc(7 * sizeof p[0]);
+ p = malloc(7 * sizeof p[0]);
if (!p)
return svgtiny_OUT_OF_MEMORY;
* http://www.w3.org/TR/SVG11/shapes#PolygonElement
*/
-svgtiny_code svgtiny_parse_poly(xmlNode *poly,
+svgtiny_code svgtiny_parse_poly(dom_element *poly,
struct svgtiny_parse_state state, bool polygon)
{
char *s, *points;
+ float *p;
+ unsigned int i;
svgtiny_parse_paint_attributes(poly, &state);
svgtiny_parse_transform_attributes(poly, &state);
}
/* allocate space for path: it will never have more elements than s */
- float *p = malloc(sizeof p[0] * strlen(s));
+ p = malloc(sizeof p[0] * strlen(s));
if (!p) {
xmlFree(points);
return svgtiny_OUT_OF_MEMORY;
}
/* parse s and build path */
- for (unsigned int i = 0; s[i]; i++)
+ for (i = 0; s[i]; i++)
if (s[i] == ',')
s[i] = ' ';
- unsigned int i = 0;
+ i = 0;
while (*s) {
float x, y;
int n;
* Parse a <text> or <tspan> element node.
*/
-svgtiny_code svgtiny_parse_text(xmlNode *text,
+svgtiny_code svgtiny_parse_text(dom_element *text,
struct svgtiny_parse_state state)
{
float x, y, width, height;
+ float px, py;
+ dom_element *child;
svgtiny_parse_position_attributes(text, state,
&x, &y, &width, &height);
svgtiny_parse_font_attributes(text, &state);
svgtiny_parse_transform_attributes(text, &state);
- float px = state.ctm.a * x + state.ctm.c * y + state.ctm.e;
- float py = state.ctm.b * x + state.ctm.d * y + state.ctm.f;
+ px = state.ctm.a * x + state.ctm.c * y + state.ctm.e;
+ py = state.ctm.b * x + state.ctm.d * y + state.ctm.f;
/* state.ctm.e = px - state.origin_x; */
/* state.ctm.f = py - state.origin_y; */
/*struct css_style style = state.style;
style.font_size.value.length.value *= state.ctm.a;*/
- for (xmlNode *child = text->children; child; child = child->next) {
+ for (child = text->children; child; child = child->next) {
svgtiny_code code = svgtiny_OK;
if (child->type == XML_TEXT_NODE) {
* Parse x, y, width, and height attributes, if present.
*/
-void svgtiny_parse_position_attributes(const xmlNode *node,
+void svgtiny_parse_position_attributes(const dom_element *node,
const struct svgtiny_parse_state state,
float *x, float *y, float *width, float *height)
{
+ xmlAttr *attr;
+
*x = 0;
*y = 0;
*width = state.viewport_width;
*height = state.viewport_height;
- for (xmlAttr *attr = node->properties; attr; attr = attr->next) {
+ for (attr = node->properties; attr; attr = attr->next) {
const char *name = (const char *) attr->name;
const char *content = (const char *) attr->children->content;
if (strcmp(name, "x") == 0)
* Parse paint attributes, if present.
*/
-void svgtiny_parse_paint_attributes(const xmlNode *node,
+void svgtiny_parse_paint_attributes(const dom_element *node,
struct svgtiny_parse_state *state)
{
- for (const xmlAttr *attr = node->properties; attr; attr = attr->next) {
+ const xmlAttr *attr;
+
+ for (attr = node->properties; attr; attr = attr->next) {
const char *name = (const char *) attr->name;
const char *content = (const char *) attr->children->content;
if (strcmp(name, "fill") == 0)
s += 13;
while (*s == ' ')
s++;
- state->stroke_width = svgtiny_parse_length(s,
+ value = strndup(s, strcspn(s, "; "));
+ state->stroke_width = svgtiny_parse_length(value,
state->viewport_width, *state);
+ free(value);
}
}
}
* Parse font attributes, if present.
*/
-void svgtiny_parse_font_attributes(const xmlNode *node,
+void svgtiny_parse_font_attributes(const dom_element *node,
struct svgtiny_parse_state *state)
{
+ const xmlAttr *attr;
+
UNUSED(state);
- for (const xmlAttr *attr = node->properties; attr; attr = attr->next) {
+ for (attr = node->properties; attr; attr = attr->next) {
if (strcmp((const char *) attr->name, "font-size") == 0) {
/*if (css_parse_length(
(const char *) attr->children->content,
* http://www.w3.org/TR/SVG11/coords#TransformAttribute
*/
-void svgtiny_parse_transform_attributes(xmlNode *node,
+void svgtiny_parse_transform_attributes(dom_element *node,
struct svgtiny_parse_state *state)
{
char *transform;
float za, zb, zc, zd, ze, zf;
float angle, x, y;
int n;
+ unsigned int i;
- for (unsigned int i = 0; s[i]; i++)
+ for (i = 0; s[i]; i++)
if (s[i] == ',')
s[i] = ' ';
svgtiny_code svgtiny_add_path(float *p, unsigned int n,
struct svgtiny_parse_state *state)
{
+ struct svgtiny_shape *shape;
+
if (state->fill == svgtiny_LINEAR_GRADIENT)
return svgtiny_add_path_linear_gradient(p, n, state);
svgtiny_transform_path(p, n, state);
- struct svgtiny_shape *shape = svgtiny_add_shape(state);
+ shape = svgtiny_add_shape(state);
if (!shape) {
free(p);
return svgtiny_OUT_OF_MEMORY;
void svgtiny_transform_path(float *p, unsigned int n,
struct svgtiny_parse_state *state)
{
- for (unsigned int j = 0; j != n; ) {
+ unsigned int j;
+
+ for (j = 0; j != n; ) {
unsigned int points = 0;
+ unsigned int k;
switch ((int) p[j]) {
case svgtiny_PATH_MOVE:
case svgtiny_PATH_LINE:
assert(0);
}
j++;
- for (unsigned int k = 0; k != points; k++) {
+ for (k = 0; k != points; k++) {
float x0 = p[j], y0 = p[j + 1];
float x = state->ctm.a * x0 + state->ctm.c * y0 +
state->ctm.e;
void svgtiny_free(struct svgtiny_diagram *svg)
{
+ unsigned int i;
assert(svg);
- for (unsigned int i = 0; i != svg->shape_count; i++) {
+ for (i = 0; i != svg->shape_count; i++) {
free(svg->shape[i].path);
free(svg->shape[i].text);
}
free(svg);
}
+#ifndef HAVE_STRNDUP
+char *svgtiny_strndup(const char *s, size_t n)
+{
+ size_t len;
+ char *s2;
+
+ for (len = 0; len != n && s[len]; len++)
+ continue;
+
+ s2 = malloc(len + 1);
+ if (s2 == NULL)
+ return NULL;
+
+ memcpy(s2, s, len);
+ s2[len] = '\0';
+
+ return s2;
+}
+#endif
+
projects / libsvgtiny.git / blobdiff