/usr/share/octave/packages/io-2.4.5/private/__OCT_oct2xlsx__.m is in octave-io 2.4.5-1.
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## Parts Copyright (C) 2014-2016 Philip Nienhuis
##
## This program is free software; you can redistribute it and/or modify it under
## the terms of the GNU General Public License as published by the Free Software
## Foundation; either version 3 of the License, or (at your option) any later
## version.
##
## This program is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
## details.
##
## You should have received a copy of the GNU General Public License along with
## this program; if not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## xlsxwrite function pure written in octave - no dependencies are needed.
## tested with MS Excel 2010, Gnumeric, LibreOffice 4.x
##
## usage:
## __OCT_oct2xlsx__(filename, matrix, wsh, range, spsh_opts)
## @end deftypefn
## Author: Markus Bergholz <markuman at gmail.com>
## Amended by Philip Nienhuis <prnienhuis at users.sf.net>
## 2013/11/08 - Initial Release
function [xls, rstatus] = __OCT_oct2xlsx__ (arrdat, xls, wsh=1, crange="", spsh_opts, obj_dims)
## Analyze worksheet parameter & determine if new sheet is required
new_sh = 0;
if (xls.changed == 3)
## Pristine spreadsheet file
new_sh = 1;
## Replace default sheet name
if (ischar (wsh))
wsh_string = xls.sheets.sh_names(1) = wsh;
elseif (isnumeric (wsh))
wsh_string = xls.sheets.sh_names(1) = sprintf ("Sheet%d", wsh);
endif
wsh_number = 1;
elseif (ischar (wsh))
if (length (wsh) > 31)
error ("Worksheet name longer than 31 characters is not supported by Excel\n");
endif
wsh_number = find (strcmp (wsh, xls.sheets.sh_names));
if (isempty (wsh_number))
## Worksheet not in stack; create a new sheet
new_sh = 1;
wsh_number = numel (xls.sheets.sh_names) + 1;
xls.sheets.sh_names(end+1) = wsh;
endif
wsh_string = wsh;
elseif (isnumeric (wsh))
if (wsh > numel (xls.sheets.sh_names))
## New worksheet
new_sh = 1;
## Default sheet name
wsh_string = sprintf ("Sheet%d", wsh);
## Name may already be in use... append underscores
while (! isempty (find (strcmp (wsh_string, xls.sheets.sh_names))) && ...
length (wsh_string <= 31))
wsh_string = strrep (wsh_string, "Sheet", "Sheet_");
endwhile
if (length (wsh_string) > 31)
error ("oct2xls: cannot add worksheet with a unique name\n");
endif
## The sheet index number can't leave a gap in the stack, so:
wsh_number = numel (xls.sheets.sh_names) + 1;
xls.sheets.sh_names(end+1) = wsh_string;
else
wsh_number = wsh;
endif
endif
if (new_sh)
rawarr = {};
lims = [];
else
## Get all data in sheet and row/column limits
[rawarr, xls] = __OCT_xlsx2oct__ (xls, wsh, "", spsh_opts);
lims = xls.limits;
endif
## Merge old and new data. Provisionally allow empty new data to wipe old data
[rawarr, lims, onr, onc] = __OCT_merge_data__ (rawarr, lims, arrdat, obj_dims);
## What needs to be done:
## - Find out worksheet number (easy, wsh_number). Relates 1:1 to rId
## - Write data to <temp>/xl/worksheets/sheet<wsh_number>.xml
## * For each string, check (persistent var) if sharedStrings.xml exists
## > If not, create it.
## * For each string check if it is in <temp>/sharedStrings.xml
## > if YES, put pointer in new worksheet
## > if NO, add node in sharedStrings.xml and pointer in new worksheet
## - If needed (new file) update <temp>/workbook.xml w. sheet name & a sheetId
## higher than any existing sheetId
## - Update workbook.xml.rels
## Write data to worksheet file. If status > 1, new sharedStrings file entries are required
[xls, status] = __OCT_oct2xlsx_sh__ (xls, wsh_number, rawarr, lims, onc, onr, spsh_opts);
## Update worksheet bookkeeping for new sheets only
if (new_sh)
## Add worksheet entry in several xml files
## === Read xl/_rels/workbook.xml.rels ===
rid = fopen ([xls.workbook filesep "xl" filesep "_rels" filesep "workbook.xml.rels"], "r+");
rxml = fread (rid, Inf, "char=>char").';
fclose (rid);
## Get rId's ((worksheet number in stack, needed in [Content_Types].xml)
rId = str2double (cell2mat (regexp (rxml, 'Id="rId(\d+)"', "tokens")));
## === Read xl/workbook.xml ===
wid = fopen ([xls.workbook filesep "xl" filesep "workbook.xml"], "r+");
wxml = fread (wid, Inf, "char=>char").';
fclose (wid);
## Get sheetId's
[sheets, is, ie] = getxmlnode (wxml, "sheets");
sheetids = str2double (cell2mat (regexp (sheets, ' sheetId="(\d+?)"', "tokens")));
## new rId must be nr of sheets + 1. rId's (>nwrId) are bumped +1 below
nwrId = numel (sheetids) + 1;
xls.sheets.rid(nwrId) = nwrId;
if (xls.changed == 3)
## New file from template. No new sheet, just update Sheet1 name
shnum = 1;
sheets = strrep (sheets, 'name="Sheet1"', ['name="' wsh_string '"']);
else
## Add a new sheet entry
shnum = max (sheetids) + 1;
wshtag = sprintf ('<sheet name="%s" sheetId="%d" r:id="rId%d" />', ...
wsh_string, shnum, nwrId);
sheets = regexprep (sheets, '/>\s*</sheets>', ["/>" wshtag "</sheets>"]);
xls.sheets.sheetid(end+1) = shnum;
endif
## Re(/over-)write workbook.xml; start at sheets node
wid = fopen ([xls.workbook filesep "xl" filesep "workbook.xml"], "w+");
fprintf (wid, "%s", wxml(1:is-1));
fprintf (wid, "%s", sheets);
fprintf (wid, "%s", wxml(ie+1:end));
fclose (wid);
## === End of xl/workbook.xml & wxml ===
## Write xl/_rels/workbook.xml.rels & [Content_Types].xml
## Only needed for new sheets in existing files
if (xls.changed != 3)
## Find highest worksheet nr in nodes, add one and shift all the rest up
is = iel = 0;
for ii=1:numel (rId)
## Get next Relationship node. Worksheets usually come first
[relshp, is, ie] = getxmlnode (rxml, "Relationship", is+1);
if (rId(ii) >= shnum)
## rId needs to be bumped
relshp = regexprep (relshp, 'Id="rId(\d+)"', ...
['Id="rId' sprintf("%d", rId(ii)+1) '"']);
## Insert new node back into rxml
rxml = [rxml(1:is-1) relshp rxml(ie+1:end)];
else
## Remember end pos of last worksheet node
iel = ie;
endif
if (rId(ii) == shnum)
## Insert new node
entry = sprintf ('<Relationship Id="rId%d" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" Target="worksheets/sheet%d.xml"/>', nwrId, shnum);
endif
endfor
rxml = [rxml(1:iel) entry rxml(iel+1:end)];
## Rewrite xl/_rels/workbook.xml.rels
rid = fopen ([xls.workbook filesep "xl" filesep "_rels" filesep "workbook.xml.rels"], "w");
fprintf (rid, "%s", rxml);
fclose (rid);
## === End of xl/_rels/worksbook.xml.rels & rxml ===
## === [Content_Types].xml. ===
## Merely insert a worksheet #n entry (#n = nwrId)
tid = fopen ([xls.workbook filesep "[Content_Types].xml"], "r+");
txml = fread (tid, Inf, "char=>char").';
fclose (tid);
## Prepare new partname node. Its stack pos = nwrId
partname = ['<Override PartName="/xl/worksheets/sheet%d.xml" ' ...
'ContentType="application/vnd.openxmlformats-' ...
'officedocument.spreadsheetml.worksheet+xml"/>' ];
partname = sprintf (partname, nwrId);
## Find last worksheet node & insert new node
srchstr = 'worksheet+xml"/>';
ipos = strfind (txml, srchstr)(end) + length (srchstr);
tid = fopen ([xls.workbook filesep "[Content_Types].xml"], "w");
fprintf (tid, "%s", txml(1:ipos-1));
fprintf (tid, partname);
fprintf (tid, txml(ipos:end));
fclose (tid);
endif
## === End of [Content_Types].xml & txml ===
## === <docProps/app.xml> ===
aid = fopen ([xls.workbook filesep "docProps" filesep "app.xml"], "r+");
axml = fread (aid, Inf, "char=>char").';
fclose (aid);
wshnode = sprintf ('<vt:lpstr>%s</vt:lpstr>', wsh_string);
if (xls.changed == 3)
[vt, is, ie] = getxmlnode (axml, "TitlesOfParts");
## Just replace Sheet1 entry by new name
vt = strrep (vt, '>Sheet1<', ['>' wsh_string '<']);
else
## 1. Update HeadingPairs node
[vt1, is, ie] = getxmlnode (axml, "HeadingPairs");
## Bump number of entries
nshts = str2double (getxmlnode (vt1, "vt:i4", [], 1)) + 1;
vt1 = regexprep (vt1, '<vt:i4>(\d+)</vt:i4>', ["<vt:i4>" sprintf("%d", nshts) "</vt:i4>"]);
## 2. Update TitlesOfParts node
[vt2, ~, ie] = getxmlnode (axml, "TitlesOfParts", ie);
## Bump number of entries
nshts = str2double (getxmlattv (vt2, "size")) + 1;
vt2 = regexprep (vt2, 'size="(\d+)"', ['size="' sprintf("%d", nshts) '"']);
## Add new worksheet entry
vt2 = regexprep (vt2, "</vt:lpstr>\s*</vt:vector>", ["</vt:lpstr>" wshnode "</vt:vector>"]);
vt = [vt1 vt2];
endif
## Re(/over-)write apps.xml
aid = fopen ([xls.workbook filesep "docProps" filesep "app.xml"], "w+");
fprintf (aid, "%s", axml(1:is-1));
fprintf (aid, "%s", vt);
fprintf (aid, "%s", axml(ie+1:end));
fclose (aid);
endif
## === End of docProps/app.xml & axml ===
## If needed update sharedStrings entries xml descriptor files
if (status > 1)
## workbook_rels.xml
rid = fopen ([xls.workbook filesep "xl" filesep "_rels" filesep "workbook.xml.rels"], "r+");
rxml = fread (rid, Inf, "char=>char").';
fclose (rid);
if (isempty (strfind (rxml, "sharedStrings")))
## Add sharedStrings.xml entry. First find unique rId
rId = str2double (cell2mat (regexp (rxml, 'Id="rId(\d+)"', "tokens")));
nwrId = sort (rId)(end) + 1;
entry = sprintf ('<Relationship Id="rId%d" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings" Target="sharedStrings.xml"/>', nwrId);
rxml = regexprep (rxml, '/>\s*</Relationships>', ["/>" entry "</Relationships>"]);
rid = fopen ([xls.workbook filesep "xl" filesep "_rels" filesep "workbook.xml.rels"], "w");
fprintf (rid, "%s", rxml);
fclose (rid);
endif
endif
if (status > 1)
## Check [Content_Types].xml for SharedStrings entry
tid = fopen ([xls.workbook filesep "[Content_Types].xml"], "r+");
txml = fread (tid, Inf, "char=>char").';
fclose (tid);
if (isempty (strfind (txml, "sharedStrings")))
## Add sharedStrings.xml entry after styles.xml node. First find that one
[~, ~, ipos] = regexp (txml, '(?:styles\+xml)(?:.+)(><Over)', 'once');
ipos = ipos(1);
txml = [txml(1:ipos) '<Override PartName="/xl/sharedStrings.xml" ' ...
'ContentType="application/vnd.openxmlformats-' ...
'officedocument.spreadsheetml.sharedStrings+xml" />' ...
txml(ipos+1:end)];
tid = fopen ([xls.workbook filesep "[Content_Types].xml"], "w");
fprintf (tid, "%s", txml);
fclose (tid);
endif
endif
## === /docProps/core.xml (user/modifier info & date/time) ===
cid = fopen ([xls.workbook filesep "docProps" filesep "core.xml"], "r+");
cxml = fread (cid, Inf, "char=>char").';
fclose (cid);
cxml = regexprep (cxml, 'dBy>(\w+)</cp:lastM', 'dBy>GNU Octave</cp:lastM');
modtime = int32 (datevec (now));
modtime = sprintf ("%4d-%2d-%2dT%2d:%2d:%2dZ", modtime(1), modtime(2), modtime(3), ...
modtime(4), modtime(5), modtime(6));
modtime = strrep (modtime, " ", "0");
[modf, ia, ib] = getxmlnode (cxml, "dcterms:created", [], 1);
cxml = [cxml(1:ia-1) strrep(cxml(ia:ib), modf, modtime) cxml(ib+1:end)];
[modf, ia, ib] = getxmlnode (cxml, "dcterms:modified", [], 1);
## Possible LO bug (see Octave bug #45915) - "dcterms:modified" node may lack
if (isempty (modf))
ia = ib = index (cxml, "<cp:revision>");
cxml = [ cxml(1:ia-1) '<dcterms:modified xsi:type="dcterms:W3CDTF">2015-09-10T19:53:40Z</dcterms:modified><' cxml(ib+1:end) ];
[modf, ia, ib] = getxmlnode (cxml, "dcterms:modified", [], 1);
endif
cxml = [cxml(1:ia-1) strrep(cxml(ia:ib), modf, modtime) cxml(ib+1:end)];
cid = fopen ([xls.workbook filesep "docProps" filesep "core.xml"], "w+");
fprintf (cid, "%s", cxml);
fclose (cid);
## === End of docProps/core.xml & cxml ===
## Update status
xls.changed = max (xls.changed-1, 1);
rstatus = 1;
endfunction
function [ xls, rstatus ] = __OCT_oct2xlsx_sh__ (xls, wsh_number, arrdat, lims, onc, onr, spsh_opts)
## Open sheet file (new or old), will be overwritten
fid = fopen ([xls.workbook filesep "xl" filesep "worksheets" filesep ...
sprintf("sheet%d.xml", wsh_number)], "r+");
if (fid < 0)
## Apparently a new sheet. Fill in default xml contents
xml = '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>';
xml = [ xml "\n" ];
xml = [ xml '<worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main"' ];
xml = [ xml ' xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships"'];
xml = [ xml ' xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"' ];
xml = [ xml ' mc:Ignorable="x14ac" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac">' ];
xml = [ xml '<dimension ref="A1"/><sheetViews><sheetView workbookViewId="0"/></sheetViews>' ];
xml = [ xml '<sheetFormatPr baseColWidth="10" defaultRowHeight="15" x14ac:dyDescent="0.25"/>' ];
xml = [ xml '<sheetData/>'];
xml = [ xml '<pageMargins left="0.7" right="0.7" top="0.8" bottom="0.8" header="0.3" footer="0.3"/>'];
xml = [ xml '</worksheet>' ];
else
## Read complete contents
xml = fread (fid, Inf, "char=>char").';
fclose (fid);
endif
## Update "dimension" (=range) node
[dimnode, is1, ie1] = getxmlnode (xml, "dimension");
## Compute new limits
rng = sprintf ("%s:%s", calccelladdress (lims(2, 1), lims(1, 1)), ...
calccelladdress (lims(2, 2), lims(1, 2)));
## Open sheet file (new or old) in reset mode, write first part of worksheet
fid = fopen ([xls.workbook filesep "xl" filesep "worksheets" filesep ...
sprintf("sheet%d.xml", wsh_number)], "w+");
fprintf (fid, "%s", xml(1:is1-1));
## Write updated dimension node
fprintf (fid, '<dimension ref="%s"/>', rng);
## Get Sheetdata node
[shtdata, is2, ie2] = getxmlnode (xml, "sheetData");
## Write second block of xml until start of sheetData
fprintf (fid, "%s", [xml(ie1+1:is2-1) "<sheetData>"]);
## Explore data types in arrdat
typearr = spsh_prstype (arrdat, onr, onc, [1:5], spsh_opts);
if (all (typearr(:) == 1)) ## Numeric
for r=1:rows (arrdat)
fprintf (fid, '<row r="%d" spans="%d:%d" x14ac:dyDescent="0.25">', ...
r+lims(2, 1)-1, ...
lims(1, 1), lims(1, 2));
for c = 1:columns (arrdat)
if (0 == isnan (arrdat{r, c}))
fprintf (fid, sprintf ('<c r="%s%d" t="n"><v>%0.15g</v></c>', ...
num2col (c+lims(1, 1)-1), r+lims(2, 1)-1, arrdat{r, c}));
endif
endfor
fprintf (fid, '</row>');
endfor
else
## Heterogeneous array. Write cell nodes depending on content
i_tatt = [];
strings = {};
str_cnt = uniq_str_cnt = 0;
## Check if there are any strings
if (any (typearr(:) == 3))
## Yep. Read sharedStrings.xml
try
sid = fopen (sprintf ("%s/xl/sharedStrings.xml", xls.workbook), "r+");
if (sid > 0)
## File exists => there are already some strings in the sheet
shstr = fread (sid, "char=>char").';
fclose (sid);
## Extract string values. May be much more than present in current sheet.
## A two-step procedure is required to preserve empty strings ("<t/>")
strings = cell2mat (regexp (shstr, '<si[^>]*>(.*?)</si>', "tokens"));
strings = regexprep (strings, '(^<t>|^<t/>|</t>$)', "");
## Take care of strings with <t attributes
i_tatt = find (! cellfun (@isempty, regexp (strings, '<t xml:.*>', "tokens")));
## Watch out for a rare corner case: just one empty string... (avoid [])
if (isempty (strings))
strings = {""};
endif
sst = getxmlnode (shstr, "sst", 1);
uniq_str_cnt = str2double (getxmlattv (sst, "uniqueCount"));
clear sst;
## Make shstr a numeric value
shstr = 1;
else
## File didn't exist yet
shstr = 0;
endif
catch
## No sharedStrings.xml; implies no "fixed" strings (computed strings can still be there)
strings = {};
str_cnt = uniq_str_cnt = 0;
end_try_catch
endif
## Process data row by row
for ii=1:rows (arrdat)
## Row node opening tag
fprintf (fid, '<row r="%d" spans="%d:%d">', ii+lims(2, 1)-1, lims(1, 1), lims(1, 2));
for jj=1:columns (arrdat)
## Ignore empty values
if (! isempty (arrdat{ii, jj}))
## Init required attributes. Note leading space
addr = sprintf (' r="%s"', calccelladdress (ii+lims(2, 1)-1, jj+lims(1, 1)-1));
## Init optional atttributes
stag = ttag = form = ""; ## t: e = error, b = boolean, s/str = string
## n = numeric
switch typearr(ii, jj)
case 1 ## Numeric
## t tag ("type") is omitted for numeric data ???
ttag = ' t="n"';
val = ["<v>" (sprintf ("%0.15g", arrdat{ii, jj})) "</v>"];
case 2 ## Boolean
ttag = ' t="b"';
if (arrdat{ii, jj})
val = ["<v>1</v>"];
else
val = ["<v>0</v>"];
endif
case 3 ## String
ttag = ' t="s"';
## FIXME s value provisionally set to 0
sptr = find (strcmp (arrdat{ii, jj}, strings));
if (isempty (sptr))
## Add new string
strings = [strings arrdat{ii, jj}];
++uniq_str_cnt;
## New pointer into sharedStrings (0-based)
sptr = uniq_str_cnt;
endif
## Val must be pointer (0-based) into sharedStrings.xml
val = sprintf ("<v>%d</v>", sptr - 1);
++str_cnt;
case 4 ## Formula
form = sprintf ("<f>%s</f>", arrdat{ii, jj}(2:end));
#val = "<v>?</v>";
val = " ";
otherwise ## (includes "case 5"
## Empty value. Clear address
addr = '';
endswitch
## Append node to file, include tags
if (! isempty (addr))
fprintf (fid, '<c%s%s%s>', addr, stag, ttag);
if (! isempty (val))
fprintf (fid, "%s%s", form, val);
endif
fprintf (fid, "</c>");
endif
endif
endfor
fprintf (fid, '</row>');
endfor
endif
## Closing tag
fprintf (fid, "</sheetData>");
## Append rest of original xml to file and close it
fprintf (fid, "%s", xml(ie2+1:end));
fclose (fid);
rstatus = 1;
## Rewrite sharedStrings.xml, if required
if (any (typearr(:) == 3) && ! isempty (strings))
## Apparently something to write
if (uniq_str_cnt == 1 && isempty (strings{1}))
## Avoid writing sharedStrings file for just one empty string entry
return
endif
## (Re-)write xl/sharedStrings.xml
sid = fopen (sprintf ("%s/xl/sharedStrings.xml", xls.workbook), "w+");
fprintf (sid, '<?xml version="1.0" encoding="UTF-8" standalone="yes"?>\n');
fprintf (sid, '<sst xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" count="%d" uniqueCount="%d">', ...
str_cnt, uniq_str_cnt);
for ii=1:uniq_str_cnt
if (ismember (ii, i_tatt))
## Invoke original <t attribute, still in string
fprintf (sid, "<si>%s</t></si>", strings{ii});
else
fprintf (sid, "<si><t>%s</t></si>", strings{ii});
endif
endfor
fprintf (sid, "</sst>");
fclose (sid);
## Check if new sharedStrings file entries are required
if (isnumeric (shstr) && (! shstr))
rstatus = 2;
return;
endif
endif
## Return
endfunction
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