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/* These extract_docx_*() functions generate docx content and docx zip archive
data.

Caller must call things in a sensible order to create valid content -
e.g. don't call docx_paragraph_start() twice without intervening call to
docx_paragraph_finish(). */

#include "../include/extract.h"

#include "docx_template.h"

#include "astring.h"
#include "document.h"
#include "docx.h"
#include "mem.h"
#include "memento.h"
#include "outf.h"
#include "sys.h"
#include "text.h"
#include "zip.h"

#include <assert.h>
#include <errno.h>
#include <float.h>
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

#include <sys/stat.h>


static int s_docx_paragraph_start(extract_alloc_t* alloc, extract_astring_t* content)
{
    return extract_astring_cat(alloc, content, "\n\n<w:p>");
}

static int s_docx_paragraph_finish(extract_alloc_t* alloc, extract_astring_t* content)
{
    return extract_astring_cat(alloc, content, "\n</w:p>");
}

static int s_docx_run_start(
        extract_alloc_t* alloc,
        extract_astring_t* content,
        content_state_t* content_state
        )
/* Starts a new run. Caller must ensure that s_docx_run_finish() was
called to terminate any previous run. */
{
    int e = 0;
    if (!e) e = extract_astring_cat(alloc, content, "\n<w:r><w:rPr><w:rFonts w:ascii=\"");
    if (!e) e = extract_astring_cat(alloc, content, content_state->font.name);
    if (!e) e = extract_astring_cat(alloc, content, "\" w:hAnsi=\"");
    if (!e) e = extract_astring_cat(alloc, content, content_state->font.name);
    if (!e) e = extract_astring_cat(alloc, content, "\"/>");
    if (!e && content_state->font.bold) e = extract_astring_cat(alloc, content, "<w:b/>");
    if (!e && content_state->font.italic) e = extract_astring_cat(alloc, content, "<w:i/>");
    {
        char   font_size_text[32];

        if (!e) e = extract_astring_cat(alloc, content, "<w:sz w:val=\"");
        snprintf(font_size_text, sizeof(font_size_text), "%f", content_state->font.size * 2);
        extract_astring_cat(alloc, content, font_size_text);
        extract_astring_cat(alloc, content, "\"/>");

        if (!e) e = extract_astring_cat(alloc, content, "<w:szCs w:val=\"");
        snprintf(font_size_text, sizeof(font_size_text), "%f", content_state->font.size * 1.5);
        extract_astring_cat(alloc, content, font_size_text);
        extract_astring_cat(alloc, content, "\"/>");
    }
    if (!e) e = extract_astring_cat(alloc, content, "</w:rPr><w:t xml:space=\"preserve\">");
    return e;

}

static int s_docx_run_finish(extract_alloc_t* alloc, content_state_t* state, extract_astring_t* content)
{
    if (state) state->font.name = NULL;
    return extract_astring_cat(alloc, content, "</w:t></w:r>");
}

static int s_docx_paragraph_empty(extract_alloc_t* alloc, extract_astring_t* content)
/* Append an empty paragraph to *content. */
{
    int e = -1;
    static char fontname[] = "OpenSans";
    content_state_t content_state = {0};
    if (s_docx_paragraph_start(alloc, content)) goto end;
    /* It seems like our choice of font size here doesn't make any difference
    to the ammount of vertical space, unless we include a non-space
    character. Presumably something to do with the styles in the template
    document. */
    content_state.font.name = fontname;
    content_state.font.size = 10;
    content_state.font.bold = 0;
    content_state.font.italic = 0;
    
    if (s_docx_run_start(alloc, content, &content_state)) goto end;
    //docx_char_append_string(content, "&#160;");   /* &#160; is non-break space. */
    if (s_docx_run_finish(alloc, NULL /*state*/, content)) goto end;
    if (s_docx_paragraph_finish(alloc, content)) goto end;
    e = 0;
    end:
    return e;
}


static int s_docx_char_truncate_if(extract_astring_t* content, char c)
/* Removes last char if it is <c>. */
{
    if (content->chars_num && content->chars[content->chars_num-1] == c) {
        extract_astring_truncate(content, 1);
    }
    return 0;
}


static int s_document_to_docx_content_paragraph(
        extract_alloc_t*    alloc,
        content_state_t*    content_state,
        paragraph_t*        paragraph,
        extract_astring_t*  content
        )
/* Append docx xml for <paragraph> to <content>. Updates *state if we change
font. */
{
    int e = -1;
    int l;
    if (s_docx_paragraph_start(alloc, content)) goto end;

    for (l=0; l<paragraph->lines_num; ++l) {
        line_t* line = paragraph->lines[l];
        int s;
        for (s=0; s<line->spans_num; ++s) {
            int si;
            span_t* span = line->spans[s];
            double font_size_new;
            content_state->ctm_prev = &span->ctm;
            font_size_new = extract_matrices_to_font_size(&span->ctm, &span->trm);
            if (!content_state->font.name
                    || strcmp(span->font_name, content_state->font.name)
                    || span->flags.font_bold != content_state->font.bold
                    || span->flags.font_italic != content_state->font.italic
                    || font_size_new != content_state->font.size
                    ) {
                if (content_state->font.name) {
                    if (s_docx_run_finish(alloc, content_state, content)) goto end;
                }
                content_state->font.name = span->font_name;
                content_state->font.bold = span->flags.font_bold;
                content_state->font.italic = span->flags.font_italic;
                content_state->font.size = font_size_new;
                if (s_docx_run_start(alloc, content, content_state)) goto end;
            }

            for (si=0; si<span->chars_num; ++si) {
                char_t* char_ = &span->chars[si];
                int c = char_->ucs;
                if (extract_astring_catc_unicode_xml(alloc, content, c)) goto end;
            }
            /* Remove any trailing '-' at end of line. */
            if (s_docx_char_truncate_if(content, '-')) goto end;
        }
    }
    if (content_state->font.name)
    {
        if (s_docx_run_finish(alloc, content_state, content)) goto end;
    }
    if (s_docx_paragraph_finish(alloc, content)) goto end;
    
    e = 0;
    
    end:
    return e;
}

static int s_docx_append_image(
        extract_alloc_t*    alloc,
        extract_astring_t*  content,
        image_t*            image
        )
/* Write reference to image into docx content. */
{
    extract_astring_cat(alloc, content, "\n");
    extract_astring_cat(alloc, content, "     <w:p>\n");
    extract_astring_cat(alloc, content, "       <w:r>\n");
    extract_astring_cat(alloc, content, "         <w:rPr>\n");
    extract_astring_cat(alloc, content, "           <w:noProof/>\n");
    extract_astring_cat(alloc, content, "         </w:rPr>\n");
    extract_astring_cat(alloc, content, "         <w:drawing>\n");
    extract_astring_cat(alloc, content, "           <wp:inline distT=\"0\" distB=\"0\" distL=\"0\" distR=\"0\" wp14:anchorId=\"7057A832\" wp14:editId=\"466EB3FB\">\n");
    extract_astring_cat(alloc, content, "             <wp:extent cx=\"2933700\" cy=\"2200275\"/>\n");
    extract_astring_cat(alloc, content, "             <wp:effectExtent l=\"0\" t=\"0\" r=\"0\" b=\"9525\"/>\n");
    extract_astring_cat(alloc, content, "             <wp:docPr id=\"1\" name=\"Picture 1\"/>\n");
    extract_astring_cat(alloc, content, "             <wp:cNvGraphicFramePr>\n");
    extract_astring_cat(alloc, content, "               <a:graphicFrameLocks xmlns:a=\"http://schemas.openxmlformats.org/drawingml/2006/main\" noChangeAspect=\"1\"/>\n");
    extract_astring_cat(alloc, content, "             </wp:cNvGraphicFramePr>\n");
    extract_astring_cat(alloc, content, "             <a:graphic xmlns:a=\"http://schemas.openxmlformats.org/drawingml/2006/main\">\n");
    extract_astring_cat(alloc, content, "               <a:graphicData uri=\"http://schemas.openxmlformats.org/drawingml/2006/picture\">\n");
    extract_astring_cat(alloc, content, "                 <pic:pic xmlns:pic=\"http://schemas.openxmlformats.org/drawingml/2006/picture\">\n");
    extract_astring_cat(alloc, content, "                   <pic:nvPicPr>\n");
    extract_astring_cat(alloc, content, "                     <pic:cNvPr id=\"1\" name=\"Picture 1\"/>\n");
    extract_astring_cat(alloc, content, "                     <pic:cNvPicPr>\n");
    extract_astring_cat(alloc, content, "                       <a:picLocks noChangeAspect=\"1\" noChangeArrowheads=\"1\"/>\n");
    extract_astring_cat(alloc, content, "                     </pic:cNvPicPr>\n");
    extract_astring_cat(alloc, content, "                   </pic:nvPicPr>\n");
    extract_astring_cat(alloc, content, "                   <pic:blipFill>\n");
    extract_astring_catf(alloc, content,"                     <a:blip r:embed=\"%s\">\n", image->id);
    extract_astring_cat(alloc, content, "                       <a:extLst>\n");
    extract_astring_cat(alloc, content, "                         <a:ext uri=\"{28A0092B-C50C-407E-A947-70E740481C1C}\">\n");
    extract_astring_cat(alloc, content, "                           <a14:useLocalDpi xmlns:a14=\"http://schemas.microsoft.com/office/drawing/2010/main\" val=\"0\"/>\n");
    extract_astring_cat(alloc, content, "                         </a:ext>\n");
    extract_astring_cat(alloc, content, "                       </a:extLst>\n");
    extract_astring_cat(alloc, content, "                     </a:blip>\n");
    //extract_astring_cat(alloc, content, "                     <a:srcRect/>\n");
    extract_astring_cat(alloc, content, "                     <a:stretch>\n");
    extract_astring_cat(alloc, content, "                       <a:fillRect/>\n");
    extract_astring_cat(alloc, content, "                     </a:stretch>\n");
    extract_astring_cat(alloc, content, "                   </pic:blipFill>\n");
    extract_astring_cat(alloc, content, "                   <pic:spPr bwMode=\"auto\">\n");
    extract_astring_cat(alloc, content, "                     <a:xfrm>\n");
    extract_astring_cat(alloc, content, "                       <a:off x=\"0\" y=\"0\"/>\n");
    extract_astring_cat(alloc, content, "                       <a:ext cx=\"2933700\" cy=\"2200275\"/>\n");
    extract_astring_cat(alloc, content, "                     </a:xfrm>\n");
    extract_astring_cat(alloc, content, "                     <a:prstGeom prst=\"rect\">\n");
    extract_astring_cat(alloc, content, "                       <a:avLst/>\n");
    extract_astring_cat(alloc, content, "                     </a:prstGeom>\n");
    extract_astring_cat(alloc, content, "                     <a:noFill/>\n");
    extract_astring_cat(alloc, content, "                     <a:ln>\n");
    extract_astring_cat(alloc, content, "                       <a:noFill/>\n");
    extract_astring_cat(alloc, content, "                     </a:ln>\n");
    extract_astring_cat(alloc, content, "                   </pic:spPr>\n");
    extract_astring_cat(alloc, content, "                 </pic:pic>\n");
    extract_astring_cat(alloc, content, "               </a:graphicData>\n");
    extract_astring_cat(alloc, content, "             </a:graphic>\n");
    extract_astring_cat(alloc, content, "           </wp:inline>\n");
    extract_astring_cat(alloc, content, "         </w:drawing>\n");
    extract_astring_cat(alloc, content, "       </w:r>\n");
    extract_astring_cat(alloc, content, "     </w:p>\n");
    extract_astring_cat(alloc, content, "\n");
    return 0;
}


static int s_docx_output_rotated_paragraphs(
        extract_alloc_t*    alloc,
        extract_page_t*     page,
        int                 paragraph_begin,
        int                 paragraph_end,
        int                 rot,
        int                 x,
        int                 y,
        int                 w,
        int                 h,
        int                 text_box_id,
        extract_astring_t*  content,
        content_state_t*    state
        )
/* Writes paragraph to content inside rotated text box. */
{
    int e = 0;
    int p;
    outf("x,y=%ik,%ik = %i,%i", x/1000, y/1000, x, y);
    extract_astring_cat(alloc, content, "\n");
    extract_astring_cat(alloc, content, "\n");
    extract_astring_cat(alloc, content, "<w:p>\n");
    extract_astring_cat(alloc, content, "  <w:r>\n");
    extract_astring_cat(alloc, content, "    <mc:AlternateContent>\n");
    extract_astring_cat(alloc, content, "      <mc:Choice Requires=\"wps\">\n");
    extract_astring_cat(alloc, content, "        <w:drawing>\n");
    extract_astring_cat(alloc, content, "          <wp:anchor distT=\"0\" distB=\"0\" distL=\"0\" distR=\"0\" simplePos=\"0\" relativeHeight=\"0\" behindDoc=\"0\" locked=\"0\" layoutInCell=\"1\" allowOverlap=\"1\" wp14:anchorId=\"53A210D1\" wp14:editId=\"2B7E8016\">\n");
    extract_astring_cat(alloc, content, "            <wp:simplePos x=\"0\" y=\"0\"/>\n");
    extract_astring_cat(alloc, content, "            <wp:positionH relativeFrom=\"page\">\n");
    extract_astring_catf(alloc, content,"              <wp:posOffset>%i</wp:posOffset>\n", x);
    extract_astring_cat(alloc, content, "            </wp:positionH>\n");
    extract_astring_cat(alloc, content, "            <wp:positionV relativeFrom=\"page\">\n");
    extract_astring_catf(alloc, content,"              <wp:posOffset>%i</wp:posOffset>\n", y);
    extract_astring_cat(alloc, content, "            </wp:positionV>\n");
    extract_astring_catf(alloc, content,"            <wp:extent cx=\"%i\" cy=\"%i\"/>\n", w, h);
    extract_astring_cat(alloc, content, "            <wp:effectExtent l=\"381000\" t=\"723900\" r=\"371475\" b=\"723900\"/>\n");
    extract_astring_cat(alloc, content, "            <wp:wrapNone/>\n");
    extract_astring_catf(alloc, content,"            <wp:docPr id=\"%i\" name=\"Text Box %i\"/>\n", text_box_id, text_box_id);
    extract_astring_cat(alloc, content, "            <wp:cNvGraphicFramePr/>\n");
    extract_astring_cat(alloc, content, "            <a:graphic xmlns:a=\"http://schemas.openxmlformats.org/drawingml/2006/main\">\n");
    extract_astring_cat(alloc, content, "              <a:graphicData uri=\"http://schemas.microsoft.com/office/word/2010/wordprocessingShape\">\n");
    extract_astring_cat(alloc, content, "                <wps:wsp>\n");
    extract_astring_cat(alloc, content, "                  <wps:cNvSpPr txBox=\"1\"/>\n");
    extract_astring_cat(alloc, content, "                  <wps:spPr>\n");
    extract_astring_catf(alloc, content,"                    <a:xfrm rot=\"%i\">\n", rot);
    extract_astring_cat(alloc, content, "                      <a:off x=\"0\" y=\"0\"/>\n");
    extract_astring_cat(alloc, content, "                      <a:ext cx=\"3228975\" cy=\"2286000\"/>\n");
    extract_astring_cat(alloc, content, "                    </a:xfrm>\n");
    extract_astring_cat(alloc, content, "                    <a:prstGeom prst=\"rect\">\n");
    extract_astring_cat(alloc, content, "                      <a:avLst/>\n");
    extract_astring_cat(alloc, content, "                    </a:prstGeom>\n");

    /* Give box a solid background. */
    if (0) {
        extract_astring_cat(alloc, content, "                    <a:solidFill>\n");
        extract_astring_cat(alloc, content, "                      <a:schemeClr val=\"lt1\"/>\n");
        extract_astring_cat(alloc, content, "                    </a:solidFill>\n");
        }

    /* Draw line around box. */
    if (0) {
        extract_astring_cat(alloc, content, "                    <a:ln w=\"175\">\n");
        extract_astring_cat(alloc, content, "                      <a:solidFill>\n");
        extract_astring_cat(alloc, content, "                        <a:prstClr val=\"black\"/>\n");
        extract_astring_cat(alloc, content, "                      </a:solidFill>\n");
        extract_astring_cat(alloc, content, "                    </a:ln>\n");
    }

    extract_astring_cat(alloc, content, "                  </wps:spPr>\n");
    extract_astring_cat(alloc, content, "                  <wps:txbx>\n");
    extract_astring_cat(alloc, content, "                    <w:txbxContent>");

    #if 0
    if (0) {
        /* Output inline text describing the rotation. */
        extract_astring_catf(content, "<w:p>\n"
                "<w:r><w:rPr><w:rFonts w:ascii=\"OpenSans\" w:hAnsi=\"OpenSans\"/><w:sz w:val=\"20.000000\"/><w:szCs w:val=\"15.000000\"/></w:rPr><w:t xml:space=\"preserve\">*** rotate: %f rad, %f deg. rot=%i</w:t></w:r>\n"
                "</w:p>\n",
                rotate,
                rotate * 180 / pi,
                rot
                );
    }
    #endif

    /* Output paragraphs p0..p2-1. */
    for (p=paragraph_begin; p<paragraph_end; ++p) {
        paragraph_t* paragraph = page->paragraphs[p];
        if (s_document_to_docx_content_paragraph(alloc, state, paragraph, content)) goto end;
    }

    extract_astring_cat(alloc, content, "\n");
    extract_astring_cat(alloc, content, "                    </w:txbxContent>\n");
    extract_astring_cat(alloc, content, "                  </wps:txbx>\n");
    extract_astring_cat(alloc, content, "                  <wps:bodyPr rot=\"0\" spcFirstLastPara=\"0\" vertOverflow=\"overflow\" horzOverflow=\"overflow\" vert=\"horz\" wrap=\"square\" lIns=\"91440\" tIns=\"45720\" rIns=\"91440\" bIns=\"45720\" numCol=\"1\" spcCol=\"0\" rtlCol=\"0\" fromWordArt=\"0\" anchor=\"t\" anchorCtr=\"0\" forceAA=\"0\" compatLnSpc=\"1\">\n");
    extract_astring_cat(alloc, content, "                    <a:prstTxWarp prst=\"textNoShape\">\n");
    extract_astring_cat(alloc, content, "                      <a:avLst/>\n");
    extract_astring_cat(alloc, content, "                    </a:prstTxWarp>\n");
    extract_astring_cat(alloc, content, "                    <a:noAutofit/>\n");
    extract_astring_cat(alloc, content, "                  </wps:bodyPr>\n");
    extract_astring_cat(alloc, content, "                </wps:wsp>\n");
    extract_astring_cat(alloc, content, "              </a:graphicData>\n");
    extract_astring_cat(alloc, content, "            </a:graphic>\n");
    extract_astring_cat(alloc, content, "          </wp:anchor>\n");
    extract_astring_cat(alloc, content, "        </w:drawing>\n");
    extract_astring_cat(alloc, content, "      </mc:Choice>\n");

    /* This fallback is copied from a real Word document. Not sure
    whether it works - both Libreoffice and Word use the above
    choice. */
    extract_astring_cat(alloc, content, "      <mc:Fallback>\n");
    extract_astring_cat(alloc, content, "        <w:pict>\n");
    extract_astring_cat(alloc, content, "          <v:shapetype w14:anchorId=\"53A210D1\" id=\"_x0000_t202\" coordsize=\"21600,21600\" o:spt=\"202\" path=\"m,l,21600r21600,l21600,xe\">\n");
    extract_astring_cat(alloc, content, "            <v:stroke joinstyle=\"miter\"/>\n");
    extract_astring_cat(alloc, content, "            <v:path gradientshapeok=\"t\" o:connecttype=\"rect\"/>\n");
    extract_astring_cat(alloc, content, "          </v:shapetype>\n");
    extract_astring_catf(alloc, content,"          <v:shape id=\"Text Box %i\" o:spid=\"_x0000_s1026\" type=\"#_x0000_t202\" style=\"position:absolute;margin-left:71.25pt;margin-top:48.75pt;width:254.25pt;height:180pt;rotation:-2241476fd;z-index:251659264;visibility:visible;mso-wrap-style:square;mso-wrap-distance-left:9pt;mso-wrap-distance-top:0;mso-wrap-distance-right:9pt;mso-wrap-distance-bottom:0;mso-position-horizontal:absolute;mso-position-horizontal-relative:text;mso-position-vertical:absolute;mso-position-vertical-relative:text;v-text-anchor:top\" o:gfxdata=\"UEsDBBQABgAIAAAAIQC2gziS/gAAAOEBAAATAAAAW0NvbnRlbnRfVHlwZXNdLnhtbJSRQU7DMBBF&#10;90jcwfIWJU67QAgl6YK0S0CoHGBkTxKLZGx5TGhvj5O2G0SRWNoz/78nu9wcxkFMGNg6quQqL6RA&#10;0s5Y6ir5vt9lD1JwBDIwOMJKHpHlpr69KfdHjyxSmriSfYz+USnWPY7AufNIadK6MEJMx9ApD/oD&#10;OlTrorhX2lFEilmcO2RdNtjC5xDF9pCuTyYBB5bi6bQ4syoJ3g9WQ0ymaiLzg5KdCXlKLjvcW893&#10;SUOqXwnz5DrgnHtJTxOsQfEKIT7DmDSUCaxw7Rqn8787ZsmRM9e2VmPeBN4uqYvTtW7jvijg9N/y&#10;JsXecLq0q+WD6m8AAAD//wMAUEsDBBQABgAIAAAAIQA4/SH/1gAAAJQBAAALAAAAX3JlbHMvLnJl&#10;bHOkkMFqwzAMhu+DvYPRfXGawxijTi+j0GvpHsDYimMaW0Yy2fr2M4PBMnrbUb/Q94l/f/hMi1qR&#10;JVI2sOt6UJgd+ZiDgffL8ekFlFSbvV0oo4EbChzGx4f9GRdb25HMsYhqlCwG5lrLq9biZkxWOiqY&#10;22YiTra2kYMu1l1tQD30/bPm3wwYN0x18gb45AdQl1tp5j/sFB2T0FQ7R0nTNEV3j6o9feQzro1i&#10;OWA14Fm+Q8a1a8+Bvu/d/dMb2JY5uiPbhG/ktn4cqGU/er3pcvwCAAD//wMAUEsDBBQABgAIAAAA&#10;IQDQg5pQVgIAALEEAAAOAAAAZHJzL2Uyb0RvYy54bWysVE1v2zAMvQ/YfxB0X+2k+WiDOEXWosOA&#10;oi3QDj0rstwYk0VNUmJ3v35PipMl3U7DLgJFPj+Rj6TnV12j2VY5X5Mp+OAs50wZSWVtXgv+7fn2&#10;0wVnPghTCk1GFfxNeX61+Phh3tqZGtKadKkcA4nxs9YWfB2CnWWZl2vVCH9GVhkEK3KNCLi616x0&#10;ogV7o7Nhnk+yllxpHUnlPbw3uyBfJP6qUjI8VJVXgemCI7eQTpfOVTyzxVzMXp2w61r2aYh/yKIR&#10;tcGjB6obEQTbuPoPqqaWjjxV4UxSk1FV1VKlGlDNIH9XzdNaWJVqgTjeHmTy/49W3m8fHatL9I4z&#10;Ixq06Fl1gX2mjg2iOq31M4CeLGChgzsie7+HMxbdVa5hjiDu4HI8ml5MpkkLVMcAh+xvB6kjt4Tz&#10;fDi8uJyOOZOIwZ7keWpGtmOLrNb58EVRw6JRcIdeJlqxvfMBGQC6h0S4J12Xt7XW6RLnR11rx7YC&#10;ndch5YwvTlDasLbgk/NxnohPYpH68P1KC/k9Vn3KgJs2cEaNdlpEK3SrrhdoReUbdEvSQAZv5W0N&#10;3jvhw6NwGDQ4sTzhAUelCclQb3G2Jvfzb/6IR/8R5azF4Bbc/9gIpzjTXw0m43IwGsVJT5fReDrE&#10;xR1HVscRs2muCQqh+8gumREf9N6sHDUv2LFlfBUhYSTeLnjYm9dht07YUamWywTCbFsR7syTlZF6&#10;383n7kU42/czYBTuaT/iYvaurTts/NLQchOoqlPPo8A7VXvdsRepLf0Ox8U7vifU7z/N4hcAAAD/&#10;/wMAUEsDBBQABgAIAAAAIQBh17L63wAAAAoBAAAPAAAAZHJzL2Rvd25yZXYueG1sTI9BT4NAEIXv&#10;Jv6HzZh4s0ubgpayNIboSW3Syg9Y2BGI7CyyS0v99Y4nPU3ezMub72W72fbihKPvHClYLiIQSLUz&#10;HTUKyvfnuwcQPmgyuneECi7oYZdfX2U6Ne5MBzwdQyM4hHyqFbQhDKmUvm7Rar9wAxLfPtxodWA5&#10;NtKM+szhtperKEqk1R3xh1YPWLRYfx4nq8APVfz9VQxPb+WUNC+vZbGPDhelbm/mxy2IgHP4M8Mv&#10;PqNDzkyVm8h40bNer2K2Ktjc82RDEi+5XKVgHfNG5pn8XyH/AQAA//8DAFBLAQItABQABgAIAAAA&#10;IQC2gziS/gAAAOEBAAATAAAAAAAAAAAAAAAAAAAAAABbQ29udGVudF9UeXBlc10ueG1sUEsBAi0A&#10;FAAGAAgAAAAhADj9If/WAAAAlAEAAAsAAAAAAAAAAAAAAAAALwEAAF9yZWxzLy5yZWxzUEsBAi0A&#10;FAAGAAgAAAAhANCDmlBWAgAAsQQAAA4AAAAAAAAAAAAAAAAALgIAAGRycy9lMm9Eb2MueG1sUEsB&#10;Ai0AFAAGAAgAAAAhAGHXsvrfAAAACgEAAA8AAAAAAAAAAAAAAAAAsAQAAGRycy9kb3ducmV2Lnht&#10;bFBLBQYAAAAABAAEAPMAAAC8BQAAAAA=&#10;\" fillcolor=\"white [3201]\" strokeweight=\".5pt\">\n", text_box_id);
    extract_astring_cat(alloc, content, "            <v:textbox>\n");
    extract_astring_cat(alloc, content, "              <w:txbxContent>");

    for (p=paragraph_begin; p<paragraph_end; ++p) {
        paragraph_t* paragraph = page->paragraphs[p];
        if (s_document_to_docx_content_paragraph(alloc, state, paragraph, content)) goto end;
    }

    extract_astring_cat(alloc, content, "\n");
    extract_astring_cat(alloc, content, "\n");
    extract_astring_cat(alloc, content, "              </w:txbxContent>\n");
    extract_astring_cat(alloc, content, "            </v:textbox>\n");
    extract_astring_cat(alloc, content, "          </v:shape>\n");
    extract_astring_cat(alloc, content, "        </w:pict>\n");
    extract_astring_cat(alloc, content, "      </mc:Fallback>\n");
    extract_astring_cat(alloc, content, "    </mc:AlternateContent>\n");
    extract_astring_cat(alloc, content, "  </w:r>\n");
    extract_astring_cat(alloc, content, "</w:p>");
    e = 0;
    end:
    return e;
}


static int s_docx_append_table(extract_alloc_t* alloc, table_t* table, extract_astring_t* content)
/* Appends table to content.

We do not fix the size of the table or its columns and rows, but instead leave layout up
to the application. */
{
    int e = -1;
    int y;
    
    if (extract_astring_cat(alloc, content,
            "\n"
            "    <w:tbl>\n"
            "        <w:tblLayout w:type=\"autofit\"/>\n"
            )) goto end;

    for (y=0; y<table->cells_num_y; ++y)
    {
        int x;
        if (extract_astring_cat(alloc, content,
                "        <w:tr>\n"
                "            <w:trPr/>\n"
                )) goto end;
        
        for (x=0; x<table->cells_num_x; ++x)
        {
            cell_t* cell = table->cells[y*table->cells_num_x + x];
            if (!cell->left) continue;
            
            if (extract_astring_cat(alloc, content, "            <w:tc>\n")) goto end;
            
            /* Write cell properties. */
            {
                if (extract_astring_cat(alloc, content,
                        "                <w:tcPr>\n"
                        "                    <w:tcBorders>\n"
                        "                        <w:top w:val=\"double\" w:sz=\"2\" w:space=\"0\" w:color=\"808080\"/>\n"
                        "                        <w:start w:val=\"double\" w:sz=\"2\" w:space=\"0\" w:color=\"808080\"/>\n"
                        "                        <w:bottom w:val=\"double\" w:sz=\"2\" w:space=\"0\" w:color=\"808080\"/>\n"
                        "                        <w:end w:val=\"double\" w:sz=\"2\" w:space=\"0\" w:color=\"808080\"/>\n"
                        "                    </w:tcBorders>\n"
                        )) goto end;
                if (cell->extend_right > 1)
                {
                    if (extract_astring_catf(alloc, content, "                    <w:gridSpan w:val=\"%i\"/>\n", cell->extend_right)) goto end;
                }
                if (cell->above)
                {
                    if (cell->extend_down > 1)
                    {
                        if (extract_astring_catf(alloc, content, "                    <w:vMerge w:val=\"restart\"/>\n", cell->extend_down)) goto end;
                    }
                }
                else
                {
                    if (extract_astring_catf(alloc, content, "                    <w:vMerge w:val=\"continue\"/>\n")) goto end;
                }
                if (extract_astring_cat(alloc, content, "                </w:tcPr>\n")) goto end;
            }
            
            /* Write contents of this cell. */
            {
                size_t chars_num_old = content->chars_num;
                int p;
                content_state_t content_state = {0};
                content_state.font.name = NULL;
                content_state.ctm_prev = NULL;
                for (p=0; p<cell->paragraphs_num; ++p)
                {
                    paragraph_t* paragraph = cell->paragraphs[p];
                    if (s_document_to_docx_content_paragraph(alloc, &content_state, paragraph, content)) goto end;
                }
                if (content_state.font.name)
                {
                    if (s_docx_run_finish(alloc, &content_state, content)) goto end;
                }

                /* Need to write out at least an empty paragraph in each cell,
                otherwise Word/Libreoffice fail to show table at all; the
                OOXML spec says "If a table cell does not include at least one
                block-level element, then this document shall be considered
                corrupt." */
                if (content->chars_num == chars_num_old)
                {
                    if (extract_astring_catf(alloc, content, "<w:p/>\n")) goto end;
                }
            }
            if (extract_astring_cat(alloc, content, "            </w:tc>\n")) goto end;
        }
        if (extract_astring_cat(alloc, content, "        </w:tr>\n")) goto end;
    }
    if (extract_astring_cat(alloc, content, "    </w:tbl>\n")) goto end;
    e = 0;
    
    end:
    return e;
}

static int s_docx_append_rotated_paragraphs(
        extract_alloc_t*    alloc,
        extract_page_t*     page,
        content_state_t*    state,
        int*                p,
        int*                text_box_id,
        const matrix_t*     ctm,
        double              rotate,
        extract_astring_t*  content
        )
/* Appends paragraphs with same rotation, starting with page->paragraphs[*p]
and updates *p. */
{
    /* Find extent of paragraphs with this same rotation. extent
    will contain max width and max height of paragraphs, in units
    before application of ctm, i.e. before rotation. */
    int e = -1;
    point_t extent = {0, 0};
    int p0 = *p;
    int p1;
    paragraph_t* paragraph = page->paragraphs[*p];
    
    outf("rotate=%.2frad=%.1fdeg ctm: ef=(%f %f) abcd=(%f %f %f %f)",
            rotate, rotate * 180 / pi,
            ctm->e,
            ctm->f,
            ctm->a,
            ctm->b,
            ctm->c,
            ctm->d
            );

    {
        /* We assume that first span is at origin of text
        block. This assumes left-to-right text. */
        double rotate0 = rotate;
        const matrix_t* ctm0 = ctm;
        point_t origin = {
                paragraph->lines[0]->spans[0]->chars[0].x,
                paragraph->lines[0]->spans[0]->chars[0].y
                };
        matrix_t ctm_inverse = {1, 0, 0, 1, 0, 0};
        double ctm_det = ctm->a*ctm->d - ctm->b*ctm->c;
        if (ctm_det != 0) {
            ctm_inverse.a = +ctm->d / ctm_det;
            ctm_inverse.b = -ctm->b / ctm_det;
            ctm_inverse.c = -ctm->c / ctm_det;
            ctm_inverse.d = +ctm->a / ctm_det;
        }
        else {
            outf("cannot invert ctm=(%f %f %f %f)",
                    ctm->a, ctm->b, ctm->c, ctm->d);
        }

        for (*p=p0; *p<page->paragraphs_num; ++(*p)) {
            paragraph = page->paragraphs[*p];
            ctm = &paragraph->lines[0]->spans[0]->ctm;
            rotate = atan2(ctm->b, ctm->a);
            if (rotate != rotate0) {
                break;
            }

            /* Update <extent>. */
            {
                int l;
                for (l=0; l<paragraph->lines_num; ++l) {
                    line_t* line = paragraph->lines[l];
                    span_t* span = extract_line_span_last(line);
                    char_t* char_ = extract_span_char_last(span);
                    double adv = char_->adv * extract_matrix_expansion(span->trm);
                    double x = char_->x + adv * cos(rotate);
                    double y = char_->y + adv * sin(rotate);

                    double dx = x - origin.x;
                    double dy = y - origin.y;

                    /* Position relative to origin and before box rotation. */
                    double xx = ctm_inverse.a * dx + ctm_inverse.b * dy;
                    double yy = ctm_inverse.c * dx + ctm_inverse.d * dy;
                    yy = -yy;
                    if (xx > extent.x) extent.x = xx;
                    if (yy > extent.y) extent.y = yy;
                    if (0) outf("rotate=%f *p=%i: origin=(%f %f) xy=(%f %f) dxy=(%f %f) xxyy=(%f %f) span: %s",
                            rotate, *p, origin.x, origin.y, x, y, dx, dy, xx, yy, extract_span_string(alloc, span));
                }
            }
        }
        p1 = *p;
        rotate = rotate0;
        ctm = ctm0;
        outf("rotate=%f p0=%i p1=%i. extent is: (%f %f)",
                rotate, p0, p1, extent.x, extent.y);
    }

    /* Paragraphs p0..p1-1 have same rotation. We output them into
    a single rotated text box. */

    /* We need unique id for text box. */
    *text_box_id += 1;

    {
        /* Angles are in units of 1/60,000 degree. */
        int rot = (int) (rotate * 180 / pi * 60000);

        /* <wp:anchor distT=\.. etc are in EMU - 1/360,000 of a cm.
        relativeHeight is z-ordering. (wp:positionV:wp:posOffset,
        wp:positionV:wp:posOffset) is position of origin of box in
        EMU.

        The box rotates about its centre but we want to rotate
        about the origin (top-left). So we correct the position of
        box by subtracting the vector that the top-left moves when
        rotated by angle <rotate> about the middle. */
        double point_to_emu = 12700;    /* https://en.wikipedia.org/wiki/Office_Open_XML_file_formats#DrawingML */
        int x = (int) (ctm->e * point_to_emu);
        int y = (int) (ctm->f * point_to_emu);
        int w = (int) (extent.x * point_to_emu);
        int h = (int) (extent.y * point_to_emu);
        int dx;
        int dy;

        if (0) outf("rotate: %f rad, %f deg. rot=%i", rotate, rotate*180/pi, rot);

        h *= 2;
        /* We can't predict how much space Word will actually
        require for the rotated text, so make the box have the
        original width but allow text to take extra vertical
        space. There doesn't seem to be a way to make the text box
        auto-grow to contain the text. */

        dx = (int) ((1-cos(rotate)) * w / 2.0 + sin(rotate) * h / 2.0);
        dy = (int) ((cos(rotate)-1) * h / 2.0 + sin(rotate) * w / 2.0);
        outf("ctm->e,f=%f,%f rotate=%f => x,y=%ik %ik dx,dy=%ik %ik",
                ctm->e,
                ctm->f,
                rotate * 180/pi,
                x/1000,
                y/1000,
                dx/1000,
                dy/1000
                );
        x -= dx;
        y -= -dy;

        if (s_docx_output_rotated_paragraphs(alloc, page, p0, p1, rot, x, y, w, h, *text_box_id, content, state)) goto end;
    }
    *p = p1 - 1;
    e = 0;
    
    end:
    
    return e;
}

int extract_document_to_docx_content(
        extract_alloc_t*    alloc,
        document_t*         document,
        int                 spacing,
        int                 rotation,
        int                 images,
        extract_astring_t*  content
        )
{
    int ret = -1;
    int text_box_id = 0;
    int p;
    
    /* Write paragraphs into <content>. */
    for (p=0; p<document->pages_num; ++p) {
        extract_page_t* page = document->pages[p];
        
        int p = 0;
        int t = 0;
        
        content_state_t content_state;
        content_state.font.name = NULL;
        content_state.font.size = 0;
        content_state.font.bold = 0;
        content_state.font.italic = 0;
        content_state.ctm_prev = NULL;
        
        /* Output paragraphs and tables in order of y coordinate. */
        for(;;)
        {
            paragraph_t* paragraph = (p == page->paragraphs_num) ? NULL : page->paragraphs[p];
            table_t* table = (t == page->tables_num) ? NULL : page->tables[t];
            double y_paragraph;
            double y_table;
            if (!paragraph && !table)   break;
            y_paragraph = (paragraph) ? paragraph->lines[0]->spans[0]->chars[0].y : DBL_MAX;
            y_table = (table) ? table->pos.y : DBL_MAX;
            
            if (paragraph && y_paragraph < y_table)
            {
                const matrix_t* ctm = &paragraph->lines[0]->spans[0]->ctm;
                double rotate = atan2(ctm->b, ctm->a);

                if (spacing
                        && content_state.ctm_prev
                        && paragraph->lines_num
                        && paragraph->lines[0]->spans_num
                        && extract_matrix_cmp4(
                                content_state.ctm_prev,
                                &paragraph->lines[0]->spans[0]->ctm
                                )
                        ) {
                    /* Extra vertical space between paragraphs that were at
                    different angles in the original document. */
                    if (s_docx_paragraph_empty(alloc, content)) goto end;
                }

                if (spacing) {
                    /* Extra vertical space between paragraphs. */
                    if (s_docx_paragraph_empty(alloc, content)) goto end;
                }

                if (rotation && rotate != 0)
                {
                    if (s_docx_append_rotated_paragraphs(alloc, page, &content_state, &p, &text_box_id, ctm, rotate, content)) goto end;
                }
                else
                {
                    if (s_document_to_docx_content_paragraph(alloc, &content_state, paragraph, content)) goto end;
                }
                p += 1;
            }
            else if (table)
            {
                if (s_docx_append_table(alloc, table, content)) goto end;
                t += 1;
            }
        }
        
        if (images) {
            int i;
            for (i=0; i<page->images_num; ++i) {
                s_docx_append_image(alloc, content, &page->images[i]);
            }
        }
    }
    ret = 0;

    end:

    return ret;
}


static int s_find_mid(const char* text, const char* begin, const char* end, const char** o_begin, const char** o_end)
/* Sets *o_begin to end of first occurrence of <begin> in <text>, and *o_end to
beginning of first occurtence of <end> in <text>. */
{
    *o_begin = strstr(text, begin);
    if (!*o_begin) goto fail;
    *o_begin += strlen(begin);
    *o_end = strstr(*o_begin, end);
    if (!*o_end) goto fail;
    return 0;
    fail:
    errno = ESRCH;
    return -1;
}


int extract_docx_content_item(
        extract_alloc_t*    alloc,
        extract_astring_t*  contentss,
        int                 contentss_num,
        images_t*           images,
        const char*         name,
        const char*         text,
        char**              text2
        )
{
    int e = -1;
    extract_astring_t   temp;
    extract_astring_init(&temp);
    *text2 = NULL;
    
    if (0)
    {}
    else if (!strcmp(name, "[Content_Types].xml")) {
        /* Add information about all image types that we are going to use. */
        const char* begin;
        const char* end;
        const char* insert;
        int it;
        extract_astring_free(alloc, &temp);
        outf("text: %s", text);
        if (s_find_mid(text, "<Types ", "</Types>", &begin, &end)) goto end;

        insert = begin;
        insert = strchr(insert, '>');
        assert(insert);
        insert += 1;

        if (extract_astring_catl(alloc, &temp, text, insert - text)) goto end;
        outf("images->imagetypes_num=%i", images->imagetypes_num);
        for (it=0; it<images->imagetypes_num; ++it) {
            const char* imagetype = images->imagetypes[it];
            if (extract_astring_cat(alloc, &temp, "<Default Extension=\"")) goto end;
            if (extract_astring_cat(alloc, &temp, imagetype)) goto end;
            if (extract_astring_cat(alloc, &temp, "\" ContentType=\"image/")) goto end;
            if (extract_astring_cat(alloc, &temp, imagetype)) goto end;
            if (extract_astring_cat(alloc, &temp, "\"/>")) goto end;
        }
        if (extract_astring_cat(alloc, &temp, insert)) goto end;
        *text2 = temp.chars;
        extract_astring_init(&temp);
    }
    else if (!strcmp(name, "word/_rels/document.xml.rels")) {
        /* Add relationships between image ids and image names within docx
        archive. */
        const char* begin;
        const char* end;
        int         j;
        extract_astring_free(alloc, &temp);
        if (s_find_mid(text, "<Relationships", "</Relationships>", &begin, &end)) goto end;
        if (extract_astring_catl(alloc, &temp, text, end - text)) goto end;
        outf("images.images_num=%i", images->images_num);
        for (j=0; j<images->images_num; ++j) {
            image_t* image = &images->images[j];
            if (extract_astring_cat(alloc, &temp, "<Relationship Id=\"")) goto end;
            if (extract_astring_cat(alloc, &temp, image->id)) goto end;
            if (extract_astring_cat(alloc, &temp, "\" Type=\"http://schemas.openxmlformats.org/officeDocument/2006/relationships/image\" Target=\"media/")) goto end;
            if (extract_astring_cat(alloc, &temp, image->name)) goto end;
            if (extract_astring_cat(alloc, &temp, "\"/>")) goto end;
        }
        if (extract_astring_cat(alloc, &temp, end)) goto end;
        *text2 = temp.chars;
        extract_astring_init(&temp);
    }
    else if (!strcmp(name, "word/document.xml")) {
        /* Insert paragraphs content. */
        if (extract_content_insert(
                alloc,
                text,
                NULL /*single*/,
                "<w:body>",
                "</w:body>",
                contentss,
                contentss_num,
                text2
                )) goto end;
    }
    else {
        *text2 = NULL;
    }
    e = 0;
    end:
    if (e) {
        /* We might have set <text2> to new content. */
        extract_free(alloc, text2);
        /* We might have used <temp> as a temporary buffer. */
        extract_astring_free(alloc, &temp);
    }
    extract_astring_init(&temp);
    return e;
}

        

int extract_docx_write_template(
        extract_alloc_t*    alloc,
        extract_astring_t*  contentss,
        int                 contentss_num,
        images_t*           images,
        const char*         path_template,
        const char*         path_out,
        int                 preserve_dir
        )
{
    int     e = -1;
    int     i;
    char*   path_tempdir = NULL;
    char*   path = NULL;
    char*   text = NULL;
    char*   text2 = NULL;

    assert(path_out);
    assert(path_template);
    
    if (extract_check_path_shell_safe(path_out)) {
        outf("path_out is unsafe: %s", path_out);
        goto end;
    }

    outf("images->images_num=%i", images->images_num);
    if (extract_asprintf(alloc, &path_tempdir, "%s.dir", path_out) < 0) goto end;
    if (extract_systemf(alloc, "rm -r '%s' 2>/dev/null", path_tempdir) < 0) goto end;

    if (extract_mkdir(path_tempdir, 0777)) {
        outf("Failed to create directory: %s", path_tempdir);
        goto end;
    }

    outf("Unzipping template document '%s' to tempdir: %s",
            path_template, path_tempdir);
    if (extract_systemf(alloc, "unzip -q -d '%s' '%s'", path_tempdir, path_template))
    {
        outf("Failed to unzip %s into %s",
                path_template, path_tempdir);
        goto end;
    }

    /* Might be nice to iterate through all items in path_tempdir, but for now
    we look at just the items that we know extract_docx_content_item() will
    modify. */
    
    {
        const char* names[] = {
                "word/document.xml",
                "[Content_Types].xml",
                "word/_rels/document.xml.rels",
                };
        int names_num = sizeof(names) / sizeof(names[0]);
        for (i=0; i<names_num; ++i) {
            const char* name = names[i];
            extract_free(alloc, &path);
            extract_free(alloc, &text);
            extract_free(alloc, &text2);
            if (extract_asprintf(alloc, &path, "%s/%s", path_tempdir, name) < 0) goto end;
            if (extract_read_all_path(alloc, path, &text)) goto end;
            
            if (extract_docx_content_item(
                    alloc,
                    contentss,
                    contentss_num,
                    images,
                    name,
                    text,
                    &text2
                    )) goto end;

            {
                const char* text3 = (text2) ? text2 : text;
                if (extract_write_all(text3, strlen(text3), path)) goto end;
            }
        }
    }

    /* Copy images into <path_tempdir>/media/. */
    extract_free(alloc, &path);
    if (extract_asprintf(alloc, &path, "%s/word/media", path_tempdir) < 0) goto end;
    if (extract_mkdir(path, 0777)) goto end;
    
    for (i=0; i<images->images_num; ++i) {
        image_t* image = &images->images[i];
        extract_free(alloc, &path);
        if (extract_asprintf(alloc, &path, "%s/word/media/%s", path_tempdir, image->name) < 0) goto end;
        if (extract_write_all(image->data, image->data_size, path)) goto end;
    }
    
    outf("Zipping tempdir to create %s", path_out);
    {
        const char* path_out_leaf = strrchr(path_out, '/');
        if (!path_out_leaf) path_out_leaf = path_out;
        if (extract_systemf(alloc, "cd '%s' && zip -q -r -D '../%s' .", path_tempdir, path_out_leaf))
        {
            outf("Zip command failed to convert '%s' directory into output file: %s",
                    path_tempdir, path_out);
            goto end;
        }
    }

    if (!preserve_dir) {
        if (extract_remove_directory(alloc, path_tempdir)) goto end;
    }

    e = 0;

    end:
    outf("e=%i", e);
    extract_free(alloc, &path_tempdir);
    extract_free(alloc, &path);
    extract_free(alloc, &text);
    extract_free(alloc, &text2);

    if (e) {
        outf("Failed to create %s", path_out);
    }
    return e;
}