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@ -311,8 +311,105 @@ static int openPage(lua_State *L) {
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return 1;
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}
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static void load_lua_text_page(lua_State *L, fz_text_page *page)
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{
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fz_text_block *block;
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fz_text_line *aline;
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fz_text_span *span;
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fz_rect bbox, linebbox;
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int i;
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int word, line;
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int len, c;
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int start;
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char chars[4]; // max length of UTF-8 encoded rune
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luaL_Buffer textbuf;
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/* table that contains all the lines */
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lua_newtable(L);
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for (block = page->blocks; block < page->blocks + page->len; block++)
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{
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for (aline = block->lines; aline < block->lines + block->len; aline++)
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{
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for (span = aline->spans; span < aline->spans + aline->len; span++)
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{
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linebbox = span->text[0].bbox; // start with sensible default
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for(i = 0; i < span->len; ) {
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/* will hold information about a word: */
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lua_newtable(L);
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luaL_buffinit(L, &textbuf);
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bbox = span->text[i].bbox; // start with sensible default
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for(; i < span->len; i++) {
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/* check for space characters */
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if(span->text[i].c == ' ' ||
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span->text[i].c == '\t' ||
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span->text[i].c == '\n' ||
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span->text[i].c == '\v' ||
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span->text[i].c == '\f' ||
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span->text[i].c == '\r' ||
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span->text[i].c == 0xA0 ||
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span->text[i].c == 0x1680 ||
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span->text[i].c == 0x180E ||
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(span->text[i].c >= 0x2000 && span->text[i].c <= 0x200A) ||
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span->text[i].c == 0x202F ||
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span->text[i].c == 0x205F ||
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span->text[i].c == 0x3000) {
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// ignore and end word
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i++;
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break;
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}
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len = fz_runetochar(chars, &span->text[i].c);
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for(c = 0; c < len; c++) {
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luaL_addchar(&textbuf, chars[c]);
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}
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bbox = fz_union_rect(bbox, span->text[i].bbox);
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linebbox = fz_union_rect(linebbox, span->text[i].bbox);
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}
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lua_pushstring(L, "word");
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luaL_pushresult(&textbuf);
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lua_settable(L, -3);
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/* bbox for a word: */
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lua_pushstring(L, "x0");
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lua_pushinteger(L, bbox.x0);
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lua_settable(L, -3);
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lua_pushstring(L, "y0");
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lua_pushinteger(L, bbox.y0);
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lua_settable(L, -3);
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lua_pushstring(L, "x1");
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lua_pushinteger(L, bbox.x1);
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lua_settable(L, -3);
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lua_pushstring(L, "y1");
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lua_pushinteger(L, bbox.y1);
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lua_settable(L, -3);
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lua_rawseti(L, -2, word++);
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}
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/* bbox for a whole line (or in fact, a "span") */
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lua_pushstring(L, "x0");
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lua_pushinteger(L, linebbox.x0);
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lua_settable(L, -3);
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lua_pushstring(L, "y0");
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lua_pushinteger(L, linebbox.y0);
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lua_settable(L, -3);
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lua_pushstring(L, "x1");
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lua_pushinteger(L, linebbox.x1);
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lua_settable(L, -3);
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lua_pushstring(L, "y1");
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lua_pushinteger(L, linebbox.y1);
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lua_settable(L, -3);
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lua_rawseti(L, -2, line++);
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}
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}
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}
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}
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/* get the text of the given page
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*
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*
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* will return text in a Lua table that is modeled after
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* djvu.c creates this table.
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*
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@ -327,105 +424,20 @@ static int openPage(lua_State *L) {
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* will return an empty table if we have no text
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*/
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static int getPageText(lua_State *L) {
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fz_text_span *page_text;
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fz_text_span *ptr;
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fz_text_page *text_page;
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fz_device *tdev;
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fz_bbox bbox, linebbox;
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int i;
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int word, line;
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int len, c;
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int start;
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char chars[4]; // max length of UTF-8 encoded rune
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luaL_Buffer textbuf;
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PdfPage *page = (PdfPage*) luaL_checkudata(L, 1, "pdfpage");
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page_text = fz_new_text_span(page->doc->context);
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tdev = fz_new_text_device(page->doc->context, page_text);
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text_page = fz_new_text_page(page->doc->context, fz_bound_page(page->doc->xref, page->page));
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tdev = fz_new_text_device(page->doc->context, NULL, text_page);
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fz_run_page(page->doc->xref, page->page, tdev, fz_identity, NULL);
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fz_free_device(tdev);
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tdev = NULL;
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/* table that contains all the lines */
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lua_newtable(L);
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line = 1;
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for(ptr = page_text; ptr != NULL; ptr = ptr->next) {
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if(ptr->text == NULL) continue;
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/* table for the words */
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lua_newtable(L);
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word = 1;
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linebbox = ptr->text[0].bbox; // start with sensible default
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for(i = 0; i < ptr->len; ) {
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/* will hold information about a word: */
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lua_newtable(L);
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luaL_buffinit(L, &textbuf);
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bbox = ptr->text[i].bbox; // start with sensible default
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for(; i < ptr->len; i++) {
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/* check for space characters */
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if(ptr->text[i].c == ' ' ||
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ptr->text[i].c == '\t' ||
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ptr->text[i].c == '\n' ||
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ptr->text[i].c == '\v' ||
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ptr->text[i].c == '\f' ||
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ptr->text[i].c == '\r' ||
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ptr->text[i].c == 0xA0 ||
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ptr->text[i].c == 0x1680 ||
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ptr->text[i].c == 0x180E ||
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(ptr->text[i].c >= 0x2000 && ptr->text[i].c <= 0x200A) ||
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ptr->text[i].c == 0x202F ||
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ptr->text[i].c == 0x205F ||
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ptr->text[i].c == 0x3000) {
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// ignore and end word
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i++;
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break;
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}
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len = runetochar(chars, &ptr->text[i].c);
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for(c = 0; c < len; c++) {
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luaL_addchar(&textbuf, chars[c]);
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}
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bbox = fz_union_bbox(bbox, ptr->text[i].bbox);
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linebbox = fz_union_bbox(linebbox, ptr->text[i].bbox);
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}
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lua_pushstring(L, "word");
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luaL_pushresult(&textbuf);
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lua_settable(L, -3);
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/* bbox for a word: */
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lua_pushstring(L, "x0");
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lua_pushinteger(L, bbox.x0);
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lua_settable(L, -3);
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lua_pushstring(L, "y0");
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lua_pushinteger(L, bbox.y0);
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lua_settable(L, -3);
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lua_pushstring(L, "x1");
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lua_pushinteger(L, bbox.x1);
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lua_settable(L, -3);
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lua_pushstring(L, "y1");
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lua_pushinteger(L, bbox.y1);
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lua_settable(L, -3);
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lua_rawseti(L, -2, word++);
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}
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/* bbox for a whole line (or in fact, a "span") */
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lua_pushstring(L, "x0");
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lua_pushinteger(L, linebbox.x0);
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lua_settable(L, -3);
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lua_pushstring(L, "y0");
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lua_pushinteger(L, linebbox.y0);
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lua_settable(L, -3);
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lua_pushstring(L, "x1");
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lua_pushinteger(L, linebbox.x1);
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lua_settable(L, -3);
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lua_pushstring(L, "y1");
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lua_pushinteger(L, linebbox.y1);
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lua_settable(L, -3);
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lua_rawseti(L, -2, line++);
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}
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load_lua_text_page(L, text_page);
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fz_free_text_span(page->doc->context, page_text);
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fz_free_text_page(page->doc->context, text_page);
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return 1;
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}
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traycold
12 years ago