From 7c47f23ee92afa07c748700f1de22fd8b8ccf967 Mon Sep 17 00:00:00 2001 From: sanine Date: Sat, 10 Dec 2022 19:12:31 -0600 Subject: refactor: remove node.* and util.* and move 3rdparty libs into separate directory --- src/ezxml/ezxml.c | 1015 ----------------------------------------------------- 1 file changed, 1015 deletions(-) delete mode 100644 src/ezxml/ezxml.c (limited to 'src/ezxml/ezxml.c') diff --git a/src/ezxml/ezxml.c b/src/ezxml/ezxml.c deleted file mode 100644 index 82b11fb..0000000 --- a/src/ezxml/ezxml.c +++ /dev/null @@ -1,1015 +0,0 @@ -/* ezxml.c - * - * Copyright 2004-2006 Aaron Voisine - * - * Permission is hereby granted, free of charge, to any person obtaining - * a copy of this software and associated documentation files (the - * "Software"), to deal in the Software without restriction, including - * without limitation the rights to use, copy, modify, merge, publish, - * distribute, sublicense, and/or sell copies of the Software, and to - * permit persons to whom the Software is furnished to do so, subject to - * the following conditions: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. - * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY - * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, - * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE - * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -#include -#include -#include -#include -#include -#include -#include -#ifndef EZXML_NOMMAP -#include -#endif // EZXML_NOMMAP -#include -#include "ezxml.h" - -#define EZXML_WS "\t\r\n " // whitespace -#define EZXML_ERRL 128 // maximum error string length - -typedef struct ezxml_root *ezxml_root_t; -struct ezxml_root { // additional data for the root tag - struct ezxml xml; // is a super-struct built on top of ezxml struct - ezxml_t cur; // current xml tree insertion point - char *m; // original xml string - size_t len; // length of allocated memory for mmap, -1 for malloc - char *u; // UTF-8 conversion of string if original was UTF-16 - char *s; // start of work area - char *e; // end of work area - char **ent; // general entities (ampersand sequences) - char ***attr; // default attributes - char ***pi; // processing instructions - short standalone; // non-zero if - char err[EZXML_ERRL]; // error string -}; - -char *EZXML_NIL[] = { NULL }; // empty, null terminated array of strings - -// returns the first child tag with the given name or NULL if not found -ezxml_t ezxml_child(ezxml_t xml, const char *name) -{ - xml = (xml) ? xml->child : NULL; - while (xml && strcmp(name, xml->name)) xml = xml->sibling; - return xml; -} - -// returns the Nth tag with the same name in the same subsection or NULL if not -// found -ezxml_t ezxml_idx(ezxml_t xml, int idx) -{ - for (; xml && idx; idx--) xml = xml->next; - return xml; -} - -// returns the value of the requested tag attribute or NULL if not found -const char *ezxml_attr(ezxml_t xml, const char *attr) -{ - int i = 0, j = 1; - ezxml_root_t root = (ezxml_root_t)xml; - - if (! xml || ! xml->attr) return NULL; - while (xml->attr[i] && strcmp(attr, xml->attr[i])) i += 2; - if (xml->attr[i]) return xml->attr[i + 1]; // found attribute - - while (root->xml.parent) root = (ezxml_root_t)root->xml.parent; // root tag - for (i = 0; root->attr[i] && strcmp(xml->name, root->attr[i][0]); i++); - if (! root->attr[i]) return NULL; // no matching default attributes - while (root->attr[i][j] && strcmp(attr, root->attr[i][j])) j += 3; - return (root->attr[i][j]) ? root->attr[i][j + 1] : NULL; // found default -} - -// same as ezxml_get but takes an already initialized va_list -ezxml_t ezxml_vget(ezxml_t xml, va_list ap) -{ - char *name = va_arg(ap, char *); - int idx = -1; - - if (name && *name) { - idx = va_arg(ap, int); - xml = ezxml_child(xml, name); - } - return (idx < 0) ? xml : ezxml_vget(ezxml_idx(xml, idx), ap); -} - -// Traverses the xml tree to retrieve a specific subtag. Takes a variable -// length list of tag names and indexes. The argument list must be terminated -// by either an index of -1 or an empty string tag name. Example: -// title = ezxml_get(library, "shelf", 0, "book", 2, "title", -1); -// This retrieves the title of the 3rd book on the 1st shelf of library. -// Returns NULL if not found. -ezxml_t ezxml_get(ezxml_t xml, ...) -{ - va_list ap; - ezxml_t r; - - va_start(ap, xml); - r = ezxml_vget(xml, ap); - va_end(ap); - return r; -} - -// returns a null terminated array of processing instructions for the given -// target -const char **ezxml_pi(ezxml_t xml, const char *target) -{ - ezxml_root_t root = (ezxml_root_t)xml; - int i = 0; - - if (! root) return (const char **)EZXML_NIL; - while (root->xml.parent) root = (ezxml_root_t)root->xml.parent; // root tag - while (root->pi[i] && strcmp(target, root->pi[i][0])) i++; // find target - return (const char **)((root->pi[i]) ? root->pi[i] + 1 : EZXML_NIL); -} - -// set an error string and return root -ezxml_t ezxml_err(ezxml_root_t root, char *s, const char *err, ...) -{ - va_list ap; - int line = 1; - char *t, fmt[EZXML_ERRL]; - - for (t = root->s; t < s; t++) if (*t == '\n') line++; - snprintf(fmt, EZXML_ERRL, "[error near line %d]: %s", line, err); - - va_start(ap, err); - vsnprintf(root->err, EZXML_ERRL, fmt, ap); - va_end(ap); - - return &root->xml; -} - -// Recursively decodes entity and character references and normalizes new lines -// ent is a null terminated array of alternating entity names and values. set t -// to '&' for general entity decoding, '%' for parameter entity decoding, 'c' -// for cdata sections, ' ' for attribute normalization, or '*' for non-cdata -// attribute normalization. Returns s, or if the decoded string is longer than -// s, returns a malloced string that must be freed. -char *ezxml_decode(char *s, char **ent, char t) -{ - char *e, *r = s, *m = s; - long b, c, d, l; - - for (; *s; s++) { // normalize line endings - while (*s == '\r') { - *(s++) = '\n'; - if (*s == '\n') memmove(s, (s + 1), strlen(s)); - } - } - - for (s = r; ; ) { - while (*s && *s != '&' && (*s != '%' || t != '%') && !isspace(*s)) s++; - - if (! *s) break; - else if (t != 'c' && ! strncmp(s, "&#", 2)) { // character reference - if (s[2] == 'x') c = strtol(s + 3, &e, 16); // base 16 - else c = strtol(s + 2, &e, 10); // base 10 - if (! c || *e != ';') { s++; continue; } // not a character ref - - if (c < 0x80) *(s++) = c; // US-ASCII subset - else { // multi-byte UTF-8 sequence - for (b = 0, d = c; d; d /= 2) b++; // number of bits in c - b = (b - 2) / 5; // number of bytes in payload - *(s++) = (0xFF << (7 - b)) | (c >> (6 * b)); // head - while (b) *(s++) = 0x80 | ((c >> (6 * --b)) & 0x3F); // payload - } - - memmove(s, strchr(s, ';') + 1, strlen(strchr(s, ';'))); - } - else if ((*s == '&' && (t == '&' || t == ' ' || t == '*')) || - (*s == '%' && t == '%')) { // entity reference - for (b = 0; ent[b] && strncmp(s + 1, ent[b], strlen(ent[b])); - b += 2); // find entity in entity list - - if (ent[b++]) { // found a match - if ((c = strlen(ent[b])) - 1 > (e = strchr(s, ';')) - s) { - l = (d = (s - r)) + c + strlen(e); // new length - r = (r == m) ? strcpy(malloc(l), r) : realloc(r, l); - e = strchr((s = r + d), ';'); // fix up pointers - } - - memmove(s + c, e + 1, strlen(e)); // shift rest of string - strncpy(s, ent[b], c); // copy in replacement text - } - else s++; // not a known entity - } - else if ((t == ' ' || t == '*') && isspace(*s)) *(s++) = ' '; - else s++; // no decoding needed - } - - if (t == '*') { // normalize spaces for non-cdata attributes - for (s = r; *s; s++) { - if ((l = strspn(s, " "))) memmove(s, s + l, strlen(s + l) + 1); - while (*s && *s != ' ') s++; - } - if (--s >= r && *s == ' ') *s = '\0'; // trim any trailing space - } - return r; -} - -// called when parser finds start of new tag -void ezxml_open_tag(ezxml_root_t root, char *name, char **attr) -{ - ezxml_t xml = root->cur; - - if (xml->name) xml = ezxml_add_child(xml, name, strlen(xml->txt)); - else xml->name = name; // first open tag - - xml->attr = attr; - root->cur = xml; // update tag insertion point -} - -// called when parser finds character content between open and closing tag -void ezxml_char_content(ezxml_root_t root, char *s, size_t len, char t) -{ - ezxml_t xml = root->cur; - char *m = s; - size_t l; - - if (! xml || ! xml->name || ! len) return; // sanity check - - s[len] = '\0'; // null terminate text (calling functions anticipate this) - len = strlen(s = ezxml_decode(s, root->ent, t)) + 1; - - if (! *(xml->txt)) xml->txt = s; // initial character content - else { // allocate our own memory and make a copy - xml->txt = (xml->flags & EZXML_TXTM) // allocate some space - ? realloc(xml->txt, (l = strlen(xml->txt)) + len) - : strcpy(malloc((l = strlen(xml->txt)) + len), xml->txt); - strcpy(xml->txt + l, s); // add new char content - if (s != m) free(s); // free s if it was malloced by ezxml_decode() - } - - if (xml->txt != m) ezxml_set_flag(xml, EZXML_TXTM); -} - -// called when parser finds closing tag -ezxml_t ezxml_close_tag(ezxml_root_t root, char *name, char *s) -{ - if (! root->cur || ! root->cur->name || strcmp(name, root->cur->name)) - return ezxml_err(root, s, "unexpected closing tag ", name); - - root->cur = root->cur->parent; - return NULL; -} - -// checks for circular entity references, returns non-zero if no circular -// references are found, zero otherwise -int ezxml_ent_ok(char *name, char *s, char **ent) -{ - int i; - - for (; ; s++) { - while (*s && *s != '&') s++; // find next entity reference - if (! *s) return 1; - if (! strncmp(s + 1, name, strlen(name))) return 0; // circular ref. - for (i = 0; ent[i] && strncmp(ent[i], s + 1, strlen(ent[i])); i += 2); - if (ent[i] && ! ezxml_ent_ok(name, ent[i + 1], ent)) return 0; - } -} - -// called when the parser finds a processing instruction -void ezxml_proc_inst(ezxml_root_t root, char *s, size_t len) -{ - int i = 0, j = 1; - char *target = s; - - s[len] = '\0'; // null terminate instruction - if (*(s += strcspn(s, EZXML_WS))) { - *s = '\0'; // null terminate target - s += strspn(s + 1, EZXML_WS) + 1; // skip whitespace after target - } - - if (! strcmp(target, "xml")) { // - if ((s = strstr(s, "standalone")) && ! strncmp(s + strspn(s + 10, - EZXML_WS "='\"") + 10, "yes", 3)) root->standalone = 1; - return; - } - - if (! root->pi[0]) *(root->pi = malloc(sizeof(char **))) = NULL; //first pi - - while (root->pi[i] && strcmp(target, root->pi[i][0])) i++; // find target - if (! root->pi[i]) { // new target - root->pi = realloc(root->pi, sizeof(char **) * (i + 2)); - root->pi[i] = malloc(sizeof(char *) * 3); - root->pi[i][0] = target; - root->pi[i][1] = (char *)(root->pi[i + 1] = NULL); // terminate pi list - root->pi[i][2] = strdup(""); // empty document position list - } - - while (root->pi[i][j]) j++; // find end of instruction list for this target - root->pi[i] = realloc(root->pi[i], sizeof(char *) * (j + 3)); - root->pi[i][j + 2] = realloc(root->pi[i][j + 1], j + 1); - strcpy(root->pi[i][j + 2] + j - 1, (root->xml.name) ? ">" : "<"); - root->pi[i][j + 1] = NULL; // null terminate pi list for this target - root->pi[i][j] = s; // set instruction -} - -// called when the parser finds an internal doctype subset -short ezxml_internal_dtd(ezxml_root_t root, char *s, size_t len) -{ - char q, *c, *t, *n = NULL, *v, **ent, **pe; - int i, j; - - pe = memcpy(malloc(sizeof(EZXML_NIL)), EZXML_NIL, sizeof(EZXML_NIL)); - - for (s[len] = '\0'; s; ) { - while (*s && *s != '<' && *s != '%') s++; // find next declaration - - if (! *s) break; - else if (! strncmp(s, "'); - continue; - } - - for (i = 0, ent = (*c == '%') ? pe : root->ent; ent[i]; i++); - ent = realloc(ent, (i + 3) * sizeof(char *)); // space for next ent - if (*c == '%') pe = ent; - else root->ent = ent; - - *(++s) = '\0'; // null terminate name - if ((s = strchr(v, q))) *(s++) = '\0'; // null terminate value - ent[i + 1] = ezxml_decode(v, pe, '%'); // set value - ent[i + 2] = NULL; // null terminate entity list - if (! ezxml_ent_ok(n, ent[i + 1], ent)) { // circular reference - if (ent[i + 1] != v) free(ent[i + 1]); - ezxml_err(root, v, "circular entity declaration &%s", n); - break; - } - else ent[i] = n; // set entity name - } - else if (! strncmp(s, "")) == '>') continue; - else *s = '\0'; // null terminate tag name - for (i = 0; root->attr[i] && strcmp(n, root->attr[i][0]); i++); - - while (*(n = ++s + strspn(s, EZXML_WS)) && *n != '>') { - if (*(s = n + strcspn(n, EZXML_WS))) *s = '\0'; // attr name - else { ezxml_err(root, t, "malformed ") - 1; - if (*c == ' ') continue; // cdata is default, nothing to do - v = NULL; - } - else if ((*s == '"' || *s == '\'') && // default value - (s = strchr(v = s + 1, *s))) *s = '\0'; - else { ezxml_err(root, t, "malformed attr[i]) { // new tag name - root->attr = (! i) ? malloc(2 * sizeof(char **)) - : realloc(root->attr, - (i + 2) * sizeof(char **)); - root->attr[i] = malloc(2 * sizeof(char *)); - root->attr[i][0] = t; // set tag name - root->attr[i][1] = (char *)(root->attr[i + 1] = NULL); - } - - for (j = 1; root->attr[i][j]; j += 3); // find end of list - root->attr[i] = realloc(root->attr[i], - (j + 4) * sizeof(char *)); - - root->attr[i][j + 3] = NULL; // null terminate list - root->attr[i][j + 2] = c; // is it cdata? - root->attr[i][j + 1] = (v) ? ezxml_decode(v, root->ent, *c) - : NULL; - root->attr[i][j] = n; // attribute name - } - } - else if (! strncmp(s, ""); // comments - else if (! strncmp(s, ""))) - ezxml_proc_inst(root, c, s++ - c); - } - else if (*s == '<') s = strchr(s, '>'); // skip other declarations - else if (*(s++) == '%' && ! root->standalone) break; - } - - free(pe); - return ! *root->err; -} - -// Converts a UTF-16 string to UTF-8. Returns a new string that must be freed -// or NULL if no conversion was needed. -char *ezxml_str2utf8(char **s, size_t *len) -{ - char *u; - size_t l = 0, sl, max = *len; - long c, d; - int b, be = (**s == '\xFE') ? 1 : (**s == '\xFF') ? 0 : -1; - - if (be == -1) return NULL; // not UTF-16 - - u = malloc(max); - for (sl = 2; sl < *len - 1; sl += 2) { - c = (be) ? (((*s)[sl] & 0xFF) << 8) | ((*s)[sl + 1] & 0xFF) //UTF-16BE - : (((*s)[sl + 1] & 0xFF) << 8) | ((*s)[sl] & 0xFF); //UTF-16LE - if (c >= 0xD800 && c <= 0xDFFF && (sl += 2) < *len - 1) { // high-half - d = (be) ? (((*s)[sl] & 0xFF) << 8) | ((*s)[sl + 1] & 0xFF) - : (((*s)[sl + 1] & 0xFF) << 8) | ((*s)[sl] & 0xFF); - c = (((c & 0x3FF) << 10) | (d & 0x3FF)) + 0x10000; - } - - while (l + 6 > max) u = realloc(u, max += EZXML_BUFSIZE); - if (c < 0x80) u[l++] = c; // US-ASCII subset - else { // multi-byte UTF-8 sequence - for (b = 0, d = c; d; d /= 2) b++; // bits in c - b = (b - 2) / 5; // bytes in payload - u[l++] = (0xFF << (7 - b)) | (c >> (6 * b)); // head - while (b) u[l++] = 0x80 | ((c >> (6 * --b)) & 0x3F); // payload - } - } - return *s = realloc(u, *len = l); -} - -// frees a tag attribute list -void ezxml_free_attr(char **attr) { - int i = 0; - char *m; - - if (! attr || attr == EZXML_NIL) return; // nothing to free - while (attr[i]) i += 2; // find end of attribute list - m = attr[i + 1]; // list of which names and values are malloced - for (i = 0; m[i]; i++) { - if (m[i] & EZXML_NAMEM) free(attr[i * 2]); - if (m[i] & EZXML_TXTM) free(attr[(i * 2) + 1]); - } - free(m); - free(attr); -} - -// parse the given xml string and return an ezxml structure -ezxml_t ezxml_parse_str(char *s, size_t len) -{ - ezxml_root_t root = (ezxml_root_t)ezxml_new(NULL); - char q, e, *d, **attr, **a = NULL; // initialize a to avoid compile warning - int l, i, j; - - root->m = s; - if (! len) return ezxml_err(root, NULL, "root tag missing"); - root->u = ezxml_str2utf8(&s, &len); // convert utf-16 to utf-8 - root->e = (root->s = s) + len; // record start and end of work area - - e = s[len - 1]; // save end char - s[len - 1] = '\0'; // turn end char into null terminator - - while (*s && *s != '<') s++; // find first tag - if (! *s) return ezxml_err(root, s, "root tag missing"); - - for (; ; ) { - attr = (char **)EZXML_NIL; - d = ++s; - - if (isalpha(*s) || *s == '_' || *s == ':' || *s < '\0') { // new tag - if (! root->cur) - return ezxml_err(root, d, "markup outside of root element"); - - s += strcspn(s, EZXML_WS "/>"); - while (isspace(*s)) *(s++) = '\0'; // null terminate tag name - - if (*s && *s != '/' && *s != '>') // find tag in default attr list - for (i = 0; (a = root->attr[i]) && strcmp(a[0], d); i++); - - for (l = 0; *s && *s != '/' && *s != '>'; l += 2) { // new attrib - attr = (l) ? realloc(attr, (l + 4) * sizeof(char *)) - : malloc(4 * sizeof(char *)); // allocate space - attr[l + 3] = (l) ? realloc(attr[l + 1], (l / 2) + 2) - : malloc(2); // mem for list of maloced vals - strcpy(attr[l + 3] + (l / 2), " "); // value is not malloced - attr[l + 2] = NULL; // null terminate list - attr[l + 1] = ""; // temporary attribute value - attr[l] = s; // set attribute name - - s += strcspn(s, EZXML_WS "=/>"); - if (*s == '=' || isspace(*s)) { - *(s++) = '\0'; // null terminate tag attribute name - q = *(s += strspn(s, EZXML_WS "=")); - if (q == '"' || q == '\'') { // attribute value - attr[l + 1] = ++s; - while (*s && *s != q) s++; - if (*s) *(s++) = '\0'; // null terminate attribute val - else { - ezxml_free_attr(attr); - return ezxml_err(root, d, "missing %c", q); - } - - for (j = 1; a && a[j] && strcmp(a[j], attr[l]); j +=3); - attr[l + 1] = ezxml_decode(attr[l + 1], root->ent, (a - && a[j]) ? *a[j + 2] : ' '); - if (attr[l + 1] < d || attr[l + 1] > s) - attr[l + 3][l / 2] = EZXML_TXTM; // value malloced - } - } - while (isspace(*s)) s++; - } - - if (*s == '/') { // self closing tag - *(s++) = '\0'; - if ((*s && *s != '>') || (! *s && e != '>')) { - if (l) ezxml_free_attr(attr); - return ezxml_err(root, d, "missing >"); - } - ezxml_open_tag(root, d, attr); - ezxml_close_tag(root, d, s); - } - else if ((q = *s) == '>' || (! *s && e == '>')) { // open tag - *s = '\0'; // temporarily null terminate tag name - ezxml_open_tag(root, d, attr); - *s = q; - } - else { - if (l) ezxml_free_attr(attr); - return ezxml_err(root, d, "missing >"); - } - } - else if (*s == '/') { // close tag - s += strcspn(d = s + 1, EZXML_WS ">") + 1; - if (! (q = *s) && e != '>') return ezxml_err(root, d, "missing >"); - *s = '\0'; // temporarily null terminate tag name - if (ezxml_close_tag(root, d, s)) return &root->xml; - if (isspace(*s = q)) s += strspn(s, EZXML_WS); - } - else if (! strncmp(s, "!--", 3)) { // xml comment - if (! (s = strstr(s + 3, "--")) || (*(s += 2) != '>' && *s) || - (! *s && e != '>')) return ezxml_err(root, d, "unclosed