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Diffstat (limited to 'xps/xps_xml.c')
-rw-r--r--xps/xps_xml.c439
1 files changed, 0 insertions, 439 deletions
diff --git a/xps/xps_xml.c b/xps/xps_xml.c
deleted file mode 100644
index 739c00ec..00000000
--- a/xps/xps_xml.c
+++ /dev/null
@@ -1,439 +0,0 @@
-#include "muxps.h"
-
-struct parser
-{
- fz_xml *head;
- fz_context *ctx;
-};
-
-struct attribute
-{
- char name[40];
- char *value;
- struct attribute *next;
-};
-
-struct fz_xml_s
-{
- char name[40];
- char *text;
- struct attribute *atts;
- fz_xml *up, *down, *next;
-};
-
-static inline void indent(int n)
-{
- while (n--) putchar(' ');
-}
-
-void fz_print_xml(fz_xml *item, int level)
-{
- while (item) {
- if (item->text) {
- printf("%s\n", item->text);
- } else {
- struct attribute *att;
- indent(level);
- printf("<%s", item->name);
- for (att = item->atts; att; att = att->next)
- printf(" %s=\"%s\"", att->name, att->value);
- if (item->down) {
- printf(">\n");
- fz_print_xml(item->down, level + 1);
- indent(level);
- printf("</%s>\n", item->name);
- }
- else {
- printf("/>\n");
- }
- item = item->next;
- }
- }
-}
-
-fz_xml *fz_xml_next(fz_xml *item)
-{
- return item->next;
-}
-
-fz_xml *fz_xml_down(fz_xml *item)
-{
- return item->down;
-}
-
-char *fz_xml_text(fz_xml *item)
-{
- return item->text;
-}
-
-char *fz_xml_tag(fz_xml *item)
-{
- return item->name;
-}
-
-char *fz_xml_att(fz_xml *item, const char *name)
-{
- struct attribute *att;
- for (att = item->atts; att; att = att->next)
- if (!strcmp(att->name, name))
- return att->value;
- return NULL;
-}
-
-static void xml_free_attribute(fz_context *ctx, struct attribute *att)
-{
- while (att) {
- struct attribute *next = att->next;
- if (att->value)
- fz_free(ctx, att->value);
- fz_free(ctx, att);
- att = next;
- }
-}
-
-void fz_free_xml(fz_context *ctx, fz_xml *item)
-{
- while (item) {
- fz_xml *next = item->next;
- if (item->text)
- fz_free(ctx, item->text);
- if (item->atts)
- xml_free_attribute(ctx, item->atts);
- if (item->down)
- fz_free_xml(ctx, item->down);
- fz_free(ctx, item);
- item = next;
- }
-}
-
-void fz_detach_xml(fz_xml *node)
-{
- if (node->up)
- node->up->down = NULL;
-}
-
-static int xml_parse_entity(int *c, char *a)
-{
- char *b;
- if (a[1] == '#') {
- if (a[2] == 'x')
- *c = strtol(a + 3, &b, 16);
- else
- *c = strtol(a + 2, &b, 10);
- if (*b == ';')
- return b - a + 1;
- }
- else if (a[1] == 'l' && a[2] == 't' && a[3] == ';') {
- *c = '<';
- return 4;
- }
- else if (a[1] == 'g' && a[2] == 't' && a[3] == ';') {
- *c = '>';
- return 4;
- }
- else if (a[1] == 'a' && a[2] == 'm' && a[3] == 'p' && a[4] == ';') {
- *c = '&';
- return 5;
- }
- else if (a[1] == 'a' && a[2] == 'p' && a[3] == 'o' && a[4] == 's' && a[5] == ';') {
- *c = '\'';
- return 6;
- }
- else if (a[1] == 'q' && a[2] == 'u' && a[3] == 'o' && a[4] == 't' && a[5] == ';') {
- *c = '"';
- return 6;
- }
- *c = *a++;
- return 1;
-}
-
-static inline int isname(int c)
-{
- return c == '.' || c == '-' || c == '_' || c == ':' ||
- (c >= '0' && c <= '9') ||
- (c >= 'A' && c <= 'Z') ||
- (c >= 'a' && c <= 'z');
-}
-
-static inline int iswhite(int c)
-{
- return c == ' ' || c == '\r' || c == '\n' || c == '\t';
-}
-
-static void xml_emit_open_tag(struct parser *parser, char *a, char *b)
-{
- fz_xml *head, *tail;
-
- head = fz_malloc_struct(parser->ctx, fz_xml);
- if (b - a > sizeof(head->name) - 1)
- b = a + sizeof(head->name) - 1;
- memcpy(head->name, a, b - a);
- head->name[b - a] = 0;
-
- head->atts = NULL;
- head->text = NULL;
- head->up = parser->head;
- head->down = NULL;
- head->next = NULL;
-
- if (!parser->head->down) {
- parser->head->down = head;
- }
- else {
- tail = parser->head->down;
- while (tail->next)
- tail = tail->next;
- tail->next = head;
- }
-
- parser->head = head;
-}
-
-static void xml_emit_att_name(struct parser *parser, char *a, char *b)
-{
- fz_xml *head = parser->head;
- struct attribute *att;
-
- att = fz_malloc_struct(parser->ctx, struct attribute);
- if (b - a > sizeof(att->name) - 1)
- b = a + sizeof(att->name) - 1;
- memcpy(att->name, a, b - a);
- att->name[b - a] = 0;
- att->value = NULL;
- att->next = head->atts;
- head->atts = att;
-}
-
-static void xml_emit_att_value(struct parser *parser, char *a, char *b)
-{
- fz_xml *head = parser->head;
- struct attribute *att = head->atts;
- char *s;
- int c;
-
- /* entities are all longer than UTFmax so runetochar is safe */
- s = att->value = fz_malloc(parser->ctx, b - a + 1);
- while (a < b) {
- if (*a == '&') {
- a += xml_parse_entity(&c, a);
- s += fz_runetochar(s, c);
- }
- else {
- *s++ = *a++;
- }
- }
- *s = 0;
-}
-
-static void xml_emit_close_tag(struct parser *parser)
-{
- if (parser->head->up)
- parser->head = parser->head->up;
-}
-
-static void xml_emit_text(struct parser *parser, char *a, char *b)
-{
- static char *empty = "";
- fz_xml *head;
- char *s;
- int c;
-
- /* Skip all-whitespace text nodes */
- for (s = a; s < b; s++)
- if (!iswhite(*s))
- break;
- if (s == b)
- return;
-
- xml_emit_open_tag(parser, empty, empty);
- head = parser->head;
-
- /* entities are all longer than UTFmax so runetochar is safe */
- s = head->text = fz_malloc(parser->ctx, b - a + 1);
- while (a < b) {
- if (*a == '&') {
- a += xml_parse_entity(&c, a);
- s += fz_runetochar(s, c);
- }
- else {
- *s++ = *a++;
- }
- }
- *s = 0;
-
- xml_emit_close_tag(parser);
-}
-
-static char *xml_parse_document_imp(struct parser *x, char *p)
-{
- char *mark;
- int quote;
-
-parse_text:
- mark = p;
- while (*p && *p != '<') ++p;
- xml_emit_text(x, mark, p);
- if (*p == '<') { ++p; goto parse_element; }
- return NULL;
-
-parse_element:
- if (*p == '/') { ++p; goto parse_closing_element; }
- if (*p == '!') { ++p; goto parse_comment; }
- if (*p == '?') { ++p; goto parse_processing_instruction; }
- while (iswhite(*p)) ++p;
- if (isname(*p))
- goto parse_element_name;
- return "syntax error in element";
-
-parse_comment:
- if (*p == '[') goto parse_cdata;
- if (*p++ != '-') return "syntax error in comment (<! not followed by --)";
- if (*p++ != '-') return "syntax error in comment (<!- not followed by -)";
- mark = p;
- while (*p) {
- if (p[0] == '-' && p[1] == '-' && p[2] == '>') {
- p += 3;
- goto parse_text;
- }
- ++p;
- }
- return "end of data in comment";
-
-parse_cdata:
- if (p[1] != 'C' || p[2] != 'D' || p[3] != 'A' || p[4] != 'T' || p[5] != 'A' || p[6] != '[')
- return "syntax error in CDATA section";
- p += 7;
- mark = p;
- while (*p) {
- if (p[0] == ']' && p[1] == ']' && p[2] == '>') {
- p += 3;
- goto parse_text;
- }
- ++p;
- }
- return "end of data in CDATA section";
-
-parse_processing_instruction:
- while (*p) {
- if (p[0] == '?' && p[1] == '>') {
- p += 2;
- goto parse_text;
- }
- ++p;
- }
- return "end of data in processing instruction";
-
-parse_closing_element:
- while (iswhite(*p)) ++p;
- mark = p;
- while (isname(*p)) ++p;
- while (iswhite(*p)) ++p;
- if (*p != '>')
- return "syntax error in closing element";
- xml_emit_close_tag(x);
- ++p;
- goto parse_text;
-
-parse_element_name:
- mark = p;
- while (isname(*p)) ++p;
- xml_emit_open_tag(x, mark, p);
- if (*p == '>') { ++p; goto parse_text; }
- if (p[0] == '/' && p[1] == '>') {
- xml_emit_close_tag(x);
- p += 2;
- goto parse_text;
- }
- if (iswhite(*p))
- goto parse_attributes;
- return "syntax error after element name";
-
-parse_attributes:
- while (iswhite(*p)) ++p;
- if (isname(*p))
- goto parse_attribute_name;
- if (*p == '>') { ++p; goto parse_text; }
- if (p[0] == '/' && p[1] == '>') {
- xml_emit_close_tag(x);
- p += 2;
- goto parse_text;
- }
- return "syntax error in attributes";
-
-parse_attribute_name:
- mark = p;
- while (isname(*p)) ++p;
- xml_emit_att_name(x, mark, p);
- while (iswhite(*p)) ++p;
- if (*p == '=') { ++p; goto parse_attribute_value; }
- return "syntax error after attribute name";
-
-parse_attribute_value:
- while (iswhite(*p)) ++p;
- quote = *p++;
- if (quote != '"' && quote != '\'')
- return "missing quote character";
- mark = p;
- while (*p && *p != quote) ++p;
- if (*p == quote) {
- xml_emit_att_value(x, mark, p++);
- goto parse_attributes;
- }
- return "end of data in attribute value";
-}
-
-static char *convert_to_utf8(fz_context *doc, unsigned char *s, int n)
-{
- unsigned char *e = s + n;
- char *dst, *d;
- int c;
-
- if (s[0] == 0xFE && s[1] == 0xFF) {
- dst = d = fz_malloc(doc, n * 2);
- while (s + 1 < e) {
- c = s[0] << 8 | s[1];
- d += fz_runetochar(d, c);
- s += 2;
- }
- *d = 0;
- return dst;
- }
-
- if (s[0] == 0xFF && s[1] == 0xFE) {
- dst = d = fz_malloc(doc, n * 2);
- while (s + 1 < e) {
- c = s[0] | s[1] << 8;
- d += fz_runetochar(d, c);
- s += 2;
- }
- *d = 0;
- return dst;
- }
-
- return (char*)s;
-}
-
-fz_xml *
-fz_parse_xml(fz_context *ctx, unsigned char *s, int n)
-{
- struct parser parser;
- fz_xml root;
- char *p, *error;
-
- /* s is already null-terminated (see xps_new_part) */
-
- memset(&root, 0, sizeof(root));
- parser.head = &root;
- parser.ctx = ctx;
-
- p = convert_to_utf8(ctx, s, n);
-
- error = xml_parse_document_imp(&parser, p);
- if (error)
- fz_throw(ctx, "%s", error);
-
- if (p != (char*)s)
- fz_free(ctx, p);
-
- return root.down;
-}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-06 09:44:55 +0000