3 lines
16 KiB
JavaScript
3 lines
16 KiB
JavaScript
/* cfb.js (C) 2013-present SheetJS -- http://sheetjs.com */
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var Base64=function e(){var e="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";return{encode:function(r){var t="";var i=0,n=0,a=0,f=0,s=0,h=0,l=0;for(var o=0;o<r.length;){i=r.charCodeAt(o++);f=i>>2;n=r.charCodeAt(o++);s=(i&3)<<4|n>>4;a=r.charCodeAt(o++);h=(n&15)<<2|a>>6;l=a&63;if(isNaN(n)){h=l=64}else if(isNaN(a)){l=64}t+=e.charAt(f)+e.charAt(s)+e.charAt(h)+e.charAt(l)}return t},decode:function r(t){var i="";var n=0,a=0,f=0,s=0,h=0,l=0,o=0;t=t.replace(/[^\w\+\/\=]/g,"");for(var c=0;c<t.length;){s=e.indexOf(t.charAt(c++));h=e.indexOf(t.charAt(c++));n=s<<2|h>>4;i+=String.fromCharCode(n);l=e.indexOf(t.charAt(c++));a=(h&15)<<4|l>>2;if(l!==64){i+=String.fromCharCode(a)}o=e.indexOf(t.charAt(c++));f=(l&3)<<6|o;if(o!==64){i+=String.fromCharCode(f)}}return i}}}();var has_buf=typeof Buffer!=="undefined"&&typeof process!=="undefined"&&typeof process.versions!=="undefined"&&process.versions.node;function new_raw_buf(e){return new(has_buf?Buffer:Array)(e)}var s2a=function 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new_buf(0);return bconcat(a).slice(0,e.size)}function u(e,r,t,i,n){var a=y;if(e===y){if(r!==0)throw new Error("DIFAT chain shorter than expected")}else if(e!==-1){var f=t[e],s=(i>>>2)-1;if(!f)return;for(var h=0;h<s;++h){if((a=__readInt32LE(f,h*4))===y)break;n.push(a)}u(__readInt32LE(f,i-4),r-1,t,i,n)}}function _(e,r,t,i,n){var a=[],f=[];if(!n)n=[];var s=i-1,h=0,l=0;for(h=r;h>=0;){n[h]=true;a[a.length]=h;f.push(e[h]);var o=t[Math.floor(h*4/i)];l=h*4&s;if(i<4+l)throw new Error("FAT boundary crossed: "+h+" 4 "+i);if(!e[o])break;h=__readInt32LE(e[o],l)}return{nodes:a,data:__toBuffer([f])}}function d(e,r,t,i){var n=e.length,a=[];var f=[],s=[],h=[];var l=i-1,o=0,c=0,u=0,_=0;for(o=0;o<n;++o){s=[];u=o+r;if(u>=n)u-=n;if(f[u])continue;h=[];for(c=u;c>=0;){f[c]=true;s[s.length]=c;h.push(e[c]);var d=t[Math.floor(c*4/i)];_=c*4&l;if(i<4+_)throw new Error("FAT boundary crossed: "+c+" 4 "+i);if(!e[d])break;c=__readInt32LE(e[d],_)}a[u]={nodes:s,data:__toBuffer([h])}}return a}function v(e,r,t,i,n,a,f,s){var h=0,l=i.length?2:0;var o=r[e].data;var u=0,d=0,v;for(;u<o.length;u+=128){var p=o.slice(u,u+128);prep_blob(p,64);d=p.read_shift(2);v=__utf16le(p,0,d-l);i.push(v);var F={name:v,type:p.read_shift(1),color:p.read_shift(1),L:p.read_shift(4,"i"),R:p.read_shift(4,"i"),C:p.read_shift(4,"i"),clsid:p.read_shift(16),state:p.read_shift(4,"i"),start:0,size:0};var g=p.read_shift(2)+p.read_shift(2)+p.read_shift(2)+p.read_shift(2);if(g!==0)F.ct=w(p,p.l-8);var I=p.read_shift(2)+p.read_shift(2)+p.read_shift(2)+p.read_shift(2);if(I!==0)F.mt=w(p,p.l-8);F.start=p.read_shift(4,"i");F.size=p.read_shift(4,"i");if(F.size<0&&F.start<0){F.size=F.type=0;F.start=y;F.name=""}if(F.type===5){h=F.start;if(n>0&&h!==y)r[h].name="!StreamData"}else if(F.size>=4096){F.storage="fat";if(r[F.start]===undefined)r[F.start]=_(t,F.start,r.fat_addrs,r.ssz);r[F.start].name=F.name;F.content=r[F.start].data.slice(0,F.size)}else{F.storage="minifat";if(F.size<0)F.size=0;else if(h!==y&&F.start!==y&&r[h]){F.content=c(F,r[h].data,(r[s]||{}).data)}}if(F.content)prep_blob(F.content,0);a[v]=F;f.push(F)}}function w(e,r){return new Date((__readUInt32LE(e,r+4)/1e7*Math.pow(2,32)+__readUInt32LE(e,r)/1e7-11644473600)*1e3)}function p(e,r){a();return f(n.readFileSync(e),r)}function F(e,r){switch(r&&r.type||"base64"){case"file":return p(e,r);case"base64":return f(s2a(Base64.decode(e)),r);case"binary":return f(s2a(e),r);}return f(e,r)}function g(e,r){var t=r||{},i=t.root||"Root Entry";if(!e.FullPaths)e.FullPaths=[];if(!e.FileIndex)e.FileIndex=[];if(e.FullPaths.length!==e.FileIndex.length)throw new Error("inconsistent CFB structure");if(e.FullPaths.length===0){e.FullPaths[0]=i+"/";e.FileIndex[0]={name:i,type:5}}if(t.CLSID)e.FileIndex[0].clsid=t.CLSID;I(e)}function I(e){var r="Sh33tJ5";if(CFB.find(e,"/"+r))return;var t=new_buf(4);t[0]=55;t[1]=t[3]=50;t[2]=54;e.FileIndex.push({name:r,type:2,content:t,size:4,L:69,R:69,C:69});e.FullPaths.push(e.FullPaths[0]+r);b(e)}function b(e,n){g(e);var a=false,f=false;for(var s=e.FullPaths.length-1;s>=0;--s){var h=e.FileIndex[s];switch(h.type){case 0:if(f)a=true;else{e.FileIndex.pop();e.FullPaths.pop()}break;case 1:;case 2:;case 5:f=true;if(isNaN(h.R*h.L*h.C))a=true;if(h.R>-1&&h.L>-1&&h.R==h.L)a=true;break;default:a=true;break;}}if(!a&&!n)return;var l=new Date(1987,1,19),o=0;var c=[];for(s=0;s<e.FullPaths.length;++s){if(e.FileIndex[s].type===0)continue;c.push([e.FullPaths[s],e.FileIndex[s]])}for(s=0;s<c.length;++s){var u=t(c[s][0]);f=false;for(o=0;o<c.length;++o)if(c[o][0]===u)f=true;if(!f)c.push([u,{name:i(u).replace("/",""),type:1,clsid:m,ct:l,mt:l,content:null}])}c.sort(function(e,t){return r(e[0],t[0])});e.FullPaths=[];e.FileIndex=[];for(s=0;s<c.length;++s){e.FullPaths[s]=c[s][0];e.FileIndex[s]=c[s][1]}for(s=0;s<c.length;++s){var _=e.FileIndex[s];var d=e.FullPaths[s];_.name=i(d).replace("/","");_.L=_.R=_.C=-(_.color=1);_.size=_.content?_.content.length:0;_.start=0;_.clsid=_.clsid||m;if(s===0){_.C=c.length>1?1:-1;_.size=0;_.type=5}else if(d.slice(-1)=="/"){for(o=s+1;o<c.length;++o)if(t(e.FullPaths[o])==d)break;_.C=o>=c.length?-1:o;for(o=s+1;o<c.length;++o)if(t(e.FullPaths[o])==t(d))break;_.R=o>=c.length?-1:o;_.type=1}else{if(t(e.FullPaths[s+1]||"")==t(d))_.R=s+1;_.type=2}}}function x(e,r){var t=r||{};b(e);var i=function(e){var r=0,t=0;for(var i=0;i<e.FileIndex.length;++i){var n=e.FileIndex[i];if(!n.content)continue;var a=n.content.length;if(a>0){if(a<4096)r+=a+63>>6;else t+=a+511>>9}}var f=e.FullPaths.length+3>>2;var s=r+7>>3;var h=r+127>>7;var l=s+t+f+h;var o=l+127>>7;var c=o<=109?0:Math.ceil((o-109)/127);while(l+o+c+127>>7>o)c=++o<=109?0:Math.ceil((o-109)/127);var u=[1,c,o,h,f,t,r,0];e.FileIndex[0].size=r<<6;u[7]=(e.FileIndex[0].start=u[0]+u[1]+u[2]+u[3]+u[4]+u[5])+(u[6]+7>>3);return u}(e);var n=new_buf(i[7]<<9);var a=0,f=0;{for(a=0;a<8;++a)n.write_shift(1,A[a]);for(a=0;a<8;++a)n.write_shift(2,0);n.write_shift(2,62);n.write_shift(2,3);n.write_shift(2,65534);n.write_shift(2,9);n.write_shift(2,6);for(a=0;a<3;++a)n.write_shift(2,0);n.write_shift(4,0);n.write_shift(4,i[2]);n.write_shift(4,i[0]+i[1]+i[2]+i[3]-1);n.write_shift(4,0);n.write_shift(4,1<<12);n.write_shift(4,i[3]?i[0]+i[1]+i[2]-1:y);n.write_shift(4,i[3]);n.write_shift(-4,i[1]?i[0]-1:y);n.write_shift(4,i[1]);for(a=0;a<109;++a)n.write_shift(-4,a<i[2]?i[1]+a:-1)}if(i[1]){for(f=0;f<i[1];++f){for(;a<236+f*127;++a)n.write_shift(-4,a<i[2]?i[1]+a:-1);n.write_shift(-4,f===i[1]-1?y:f+1)}}var s=function(e){for(f+=e;a<f-1;++a)n.write_shift(-4,a+1);if(e){++a;n.write_shift(-4,y)}};f=a=0;for(f+=i[1];a<f;++a)n.write_shift(-4,B.DIFSECT);for(f+=i[2];a<f;++a)n.write_shift(-4,B.FATSECT);s(i[3]);s(i[4]);var h=0,l=0;var o=e.FileIndex[0];for(;h<e.FileIndex.length;++h){o=e.FileIndex[h];if(!o.content)continue;l=o.content.length;if(l<4096)continue;o.start=f;s(l+511>>9)}s(i[6]+7>>3);while(n.l&511)n.write_shift(-4,B.ENDOFCHAIN);f=a=0;for(h=0;h<e.FileIndex.length;++h){o=e.FileIndex[h];if(!o.content)continue;l=o.content.length;if(!l||l>=4096)continue;o.start=f;s(l+63>>6)}while(n.l&511)n.write_shift(-4,B.ENDOFCHAIN);for(a=0;a<i[4]<<2;++a){var c=e.FullPaths[a];if(!c||c.length===0){for(h=0;h<17;++h)n.write_shift(4,0);for(h=0;h<3;++h)n.write_shift(4,-1);for(h=0;h<12;++h)n.write_shift(4,0);continue}o=e.FileIndex[a];if(a===0)o.start=o.size?o.start-1:y;var u=a===0&&t.root||o.name;l=2*(u.length+1);n.write_shift(64,u,"utf16le");n.write_shift(2,l);n.write_shift(1,o.type);n.write_shift(1,o.color);n.write_shift(-4,o.L);n.write_shift(-4,o.R);n.write_shift(-4,o.C);if(!o.clsid)for(h=0;h<4;++h)n.write_shift(4,0);else n.write_shift(16,o.clsid,"hex");n.write_shift(4,o.state||0);n.write_shift(4,0);n.write_shift(4,0);n.write_shift(4,0);n.write_shift(4,0);n.write_shift(4,o.start);n.write_shift(4,o.size);n.write_shift(4,0)}for(a=1;a<e.FileIndex.length;++a){o=e.FileIndex[a];if(o.size>=4096){n.l=o.start+1<<9;for(h=0;h<o.size;++h)n.write_shift(1,o.content[h]);for(;h&511;++h)n.write_shift(1,0)}}for(a=1;a<e.FileIndex.length;++a){o=e.FileIndex[a];if(o.size>0&&o.size<4096){for(h=0;h<o.size;++h)n.write_shift(1,o.content[h]);for(;h&63;++h)n.write_shift(1,0)}}while(n.l<n.length)n.write_shift(1,0);return n}function E(e,r){var t=e.FullPaths.map(function(e){return e.toUpperCase()});var i=t.map(function(e){var r=e.split("/");return r[r.length-(e.slice(-1)=="/"?2:1)]});var n=false;if(r.charCodeAt(0)===47){n=true;r=t[0].slice(0,-1)+r}else n=r.indexOf("/")!==-1;var a=r.toUpperCase();var f=n===true?t.indexOf(a):i.indexOf(a);if(f!==-1)return e.FileIndex[f];var s=!a.match(chr1);a=a.replace(chr0,"");if(s)a=a.replace(chr1,"!");for(f=0;f<t.length;++f){if((s?t[f].replace(chr1,"!"):t[f]).replace(chr0,"")==a)return e.FileIndex[f];if((s?i[f].replace(chr1,"!"):i[f]).replace(chr0,"")==a)return e.FileIndex[f]}return null}var C=64;var y=-2;var S="d0cf11e0a1b11ae1";var A=[208,207,17,224,161,177,26,225];var m="00000000000000000000000000000000";var B={MAXREGSECT:-6,DIFSECT:-4,FATSECT:-3,ENDOFCHAIN:y,FREESECT:-1,HEADER_SIGNATURE:S,HEADER_MINOR_VERSION:"3e00",MAXREGSID:-6,NOSTREAM:-1,HEADER_CLSID:m,EntryTypes:["unknown","storage","stream","lockbytes","property","root"]};function L(e,r,t){a();var i=x(e,t);n.writeFileSync(r,i)}function k(e){var r=new Array(e.length);for(var t=0;t<e.length;++t)r[t]=String.fromCharCode(e[t]);return r.join("")}function R(e,r){var t=x(e,r);switch(r&&r.type){case"file":a();n.writeFileSync(r.filename,t);return t;case"binary":return k(t);case"base64":return Base64.encode(k(t));}return t}function z(e){var r={};g(r,e);return r}function P(e,r,t,n){g(e);var a=CFB.find(e,r);if(!a){var f=e.FullPaths[0];if(r.slice(0,f.length)==f)f=r;else{if(f.slice(-1)!="/")f+="/";f=(f+r).replace("//","/")}a={name:i(r),type:2};e.FileIndex.push(a);e.FullPaths.push(f);CFB.utils.cfb_gc(e)}a.content=t;a.size=t?t.length:0;if(n){if(n.CLSID)a.clsid=n.CLSID}return a}function D(e,r){g(e);var t=CFB.find(e,r);if(t)for(var i=0;i<e.FileIndex.length;++i)if(e.FileIndex[i]==t){e.FileIndex.splice(i,1);e.FullPaths.splice(i,1);return true}return false}function O(e,r,t){g(e);var n=CFB.find(e,r);if(n)for(var a=0;a<e.FileIndex.length;++a)if(e.FileIndex[a]==n){e.FileIndex[a].name=i(t);e.FullPaths[a]=t;return true}return false}function T(e){b(e,true)}e.find=E;e.read=F;e.parse=f;e.write=R;e.writeFile=L;e.utils={cfb_new:z,cfb_add:P,cfb_del:D,cfb_mov:O,cfb_gc:T,ReadShift:ReadShift,CheckField:CheckField,prep_blob:prep_blob,bconcat:bconcat,consts:B};return e}();if(typeof require!=="undefined"&&typeof module!=="undefined"&&typeof DO_NOT_EXPORT_CFB==="undefined"){module.exports=CFB}
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