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author | Chris Xiong <chirs241097@gmail.com> | 2019-02-10 11:16:07 +0800 |
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committer | Chris Xiong <chirs241097@gmail.com> | 2019-02-10 11:16:07 +0800 |
commit | 9d3c8c0e6e1a7ba43bf3dc19350d1dca68b657a3 (patch) | |
tree | 339de0698c13e1763d3361d70fb1266621025c91 /blog/sbs_2/cgi-src/get-archive-list.cpp | |
download | web-9d3c8c0e6e1a7ba43bf3dc19350d1dca68b657a3.tar.xz |
Initial commit.
Diffstat (limited to 'blog/sbs_2/cgi-src/get-archive-list.cpp')
-rw-r--r-- | blog/sbs_2/cgi-src/get-archive-list.cpp | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/blog/sbs_2/cgi-src/get-archive-list.cpp b/blog/sbs_2/cgi-src/get-archive-list.cpp new file mode 100644 index 0000000..28f316d --- /dev/null +++ b/blog/sbs_2/cgi-src/get-archive-list.cpp @@ -0,0 +1,200 @@ +/* + * Copyright 2017 Chris Xiong + * + * 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. + */ +/* + * Get list of archives + * query parameters: + * pn=<int>: page number, defaults to 0 + * pp=<int>: number of posts per page, defaults to 20 + * pc: if exists, gets how many pages are there from the current pp value + * f: tag filter. + * gt: get a list of tags used by posts instead. + * qn=<filename>: query the neibouring posts of the given post. + * returned object: + * A number if pc exists denoting number of pages. + * Or the following JSON object if gf exists. + * ["tag1","tag2",...] + * Or the following JSON object if qn exists. + * { + * "prev": <last post> + * "succ": <next post> + * } + * Otherwise returns archive list in JSON: + * { + * "postsPerPage": <requested pp> + * "postsOnPage": <number of posts on this page> + * "page": <requested pn> + * "posts": [ + * { + * "filename": ... + * "title": ... + * "date": ... + * "tags": ... + * }, + * ... + * ] + * } + */ +#include <dirent.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> +#include <cstdio> +#include <cstring> +#include <algorithm> +#include <functional> +#include <vector> +#include <map> +#include <set> +#include <string> +#include "cgiutils.hpp" +#define stripr(s) s[strlen(s)-1]=='\n'?s[strlen(s)-1]=0:0 +struct post +{ + std::string t,d,tg; +}; +std::map<std::string,post,std::greater<std::string>> f; +char buf[65536]; +int main(int argc,char** argv,char** envp) +{ + struct stat idxs,cdirs; + stat("/var/www/html/blog/content/pindex",&idxs); + stat("/var/www/html/blog/content",&cdirs); + if(cdirs.st_mtim.tv_sec>idxs.st_mtim.tv_sec) + system("/var/www/html/blog/content/util/indexer > /dev/null 2> /dev/null"); + QueryStrParser a; + FILE *fidx=fopen("/var/www/html/blog/content/pindex","r"); + while(fgets(buf,65536,fidx)) + { + stripr(buf);std::vector<std::string> v; + split(std::string(buf),'\t',v); + if(v.size()==4) + f[v[0]]=post{v[1],v[2],v[3]}; + } + fclose(fidx); + HTTPHeader h; + if(a.exist("gt")) + { + std::set<std::string> s; + std::vector<std::string> v; + for(auto i=f.begin();i!=f.end();++i) + { + split(i->second.tg,',',v); + for(size_t j=0;j<v.size();++j) + s.insert("\"#"+v[j]+"\""); + } + h.appendHeader("Content-type: text/plain; charset=utf-8"); + h.print(); + printf("["); + auto it=s.begin(); + printf("%s",it->c_str()); + while(++it!=s.end())printf(",%s",it->c_str()); + printf("]"); + } + else + { + if(a.exist("f")) + for(auto i=f.begin();i!=f.end();) + { + std::vector<std::string> v; + split(i->second.tg,',',v); + std::set<std::string> sv=std::set<std::string>(v.begin(),v.end()); + if(sv.find(a.value("f"))==sv.end()){auto t=i++;f.erase(t);} + else i++; + } + if(a.exist("pc")) + { + int pp=0; + if(!a.exist("pp"))pp=20; + else{ + try{ + pp=std::stoi(a.value("pp")); + }catch(std::exception e){h.setStatusCode(400);} + } + if(!pp)h.setStatusCode(400); + h.appendHeader("Content-type: text/plain; charset=utf-8"); + h.print(); + printf("%lu\n",f.size()/pp+((f.size()%pp)?1:0)); + return 0; + } + else if(a.exist("qn")) + { + if(f.find(a.value("qn"))==f.end()) + h.setStatusCode(400); + h.print();if(h.statusCode()>=400)return 0; + auto i=f.find(a.value("qn")); + std::string pr="",sc=""; + auto t=i;if(t!=f.begin())pr=(--t)->first; + t=i;if(!(++t==f.end()))sc=t->first; + printf("{\"prev\":\"%s\",\"succ\":\"%s\"}",sc.c_str(),pr.c_str()); + return 0; + } + else + { + unsigned pp=20,pn=0; + if(!a.exist("pp"))pp=20; + else{ + try{ + pp=std::stoi(a.value("pp")); + }catch(std::exception e){h.setStatusCode(400);} + } + if(!a.exist("pn"))pn=0; + else{ + try{ + pn=std::stoi(a.value("pn")); + }catch(std::exception e){h.setStatusCode(400);} + } + if(!pp)h.setStatusCode(400); + if(pn>=f.size()/pp+((f.size()%pp)?1:0))h.setStatusCode(400); + int rpp=(pn!=f.size()/pp+((f.size()%pp)?1:0)-1)?pp: + f.size()-pp*(f.size()/pp+((f.size()%pp)?1:0)-1); + h.appendHeader("Content-type: text/plain; charset=utf-8"); + h.print(); + if(h.statusCode()>=400)return 0; + puts("{"); + printf("\t\"postsPerPage\":%d,\n",pp); + printf("\t\"postsOnPage\":%d,\n",rpp); + printf("\t\"page\":%d,\n",pn); + puts("\t\"posts\": ["); + auto it=f.begin();std::advance(it,pn*pp); + for(int i=0;i<rpp-1;++i) + { + puts("\t\t{"); + printf("\t\t\t\"filename\":\"%s\",\n",it->first.c_str()); + printf("\t\t\t\"title\":\"%s\",\n",it->second.t.c_str()); + printf("\t\t\t\"date\":\"%s\",\n",it->second.d.c_str()); + printf("\t\t\t\"tags\":\"%s\"\n",it->second.tg.c_str()); + puts("\t\t},");++it; + } + puts("\t\t{"); + printf("\t\t\t\"filename\":\"%s\",\n",it->first.c_str()); + printf("\t\t\t\"title\":\"%s\",\n",it->second.t.c_str()); + printf("\t\t\t\"date\":\"%s\",\n",it->second.d.c_str()); + printf("\t\t\t\"tags\":\"%s\"\n",it->second.tg.c_str()); + puts("\t\t}"); + puts("\t]"); + puts("}"); + } + } + return 0; +} |