[64] | 1 | // This file is a part of the Framsticks GDK library.
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| 2 | // Copyright (C) 2002-2011 Szymon Ulatowski. See LICENSE.txt for details.
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| 3 | // Refer to http://www.framsticks.com/ for further information.
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| 4 |
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| 5 | #include "multiparamload.h"
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| 6 | #include "framsg.h"
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| 7 | #include <ctype.h>
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| 8 |
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| 9 | void MultiParamLoader::init()
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| 10 | {
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| 11 | file=0; ownfile=0;
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| 12 | status=0;
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| 13 | reset();
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| 14 | }
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| 15 |
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| 16 | void MultiParamLoader::reset()
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| 17 | {
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| 18 | status=0;
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| 19 | breakcond=OnError;
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| 20 | emptyparam.setParamTab(empty_paramtab);
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| 21 | }
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| 22 |
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| 23 | void MultiParamLoader::load()
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| 24 | {
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| 25 | clearstack();
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| 26 | if (!file)
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| 27 | {
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| 28 | lasterror="can't open file";
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| 29 | status=OnError;
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| 30 | return;
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| 31 | }
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| 32 | status=Loading;
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| 33 | }
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| 34 |
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| 35 | void MultiParamLoader::abort()
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| 36 | {
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| 37 | if (file && ownfile)
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| 38 | {
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| 39 | fclose(file);
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| 40 | file=0;
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| 41 | }
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| 42 | clearstack();
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| 43 | status=Finished;
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| 44 | }
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| 45 |
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| 46 | void MultiParamLoader::load(VirtFILE *f)
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| 47 | {
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| 48 | abort();
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| 49 | ownfile=0;
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| 50 | file=f;
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| 51 | load();
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| 52 | }
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| 53 |
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| 54 | void MultiParamLoader::load(const char* filename)
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| 55 | {
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| 56 | abort();
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| 57 | ownfile=1;
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| 58 | file=Vfopen(filename,FOPEN_READ);
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| 59 | load();
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| 60 | }
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| 61 |
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| 62 | static int isEOL(char ch)
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| 63 | {
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| 64 | return (ch=='\n')||(ch=='\r');
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| 65 | }
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| 66 |
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| 67 | static char* fgets0(char*t,int d,VirtFILE *f,int &linlen)
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| 68 | {
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| 69 | char *r=fgets(t,d,f);
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| 70 | if (r)
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| 71 | {
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| 72 | int d=strlen(r);
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| 73 | if (d && isEOL(r[d-1])) { d--; if (d && isEOL(r[d-1])) d--; }
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| 74 | linlen=d;
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| 75 | r[d]=0;
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| 76 | }
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| 77 | else
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| 78 | linlen=0;
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| 79 | return r;
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| 80 | }
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| 81 |
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| 82 | static char* trim(char*t,int &linlen)
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| 83 | {
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| 84 | char *x=t;
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| 85 | while(isspace(*x)) x++;
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| 86 | linlen-=(x-t);
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| 87 | t=x;
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| 88 | if (!linlen) return t;
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| 89 | x=t+linlen-1;
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| 90 | while(isspace(*x)) x--;
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| 91 | x[1]=0;
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| 92 | linlen=x-t+1;
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| 93 | return t;
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| 94 | }
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| 95 |
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| 96 | int MultiParamLoader::go()
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| 97 | {
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| 98 | char buf[100];
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| 99 | char *t;
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| 100 | int linlen;
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| 101 | if (status==OnError) return status;
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| 102 | while (!finished())
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| 103 | {
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| 104 | if ((status==BeforeObject) || ((status==BeforeUnknown)&&lastclass))
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| 105 | {
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| 106 | lastclass->load(file);
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| 107 | if ((status!=Finished) && maybeBreak(AfterObject))
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| 108 | break;
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| 109 | continue;
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| 110 | }
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| 111 | else if (status==BeforeUnknown)
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| 112 | {
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| 113 | loadObjectNow(&emptyparam);
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| 114 | continue;
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| 115 | }
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| 116 | t=fgets0(buf,100,file,linlen);
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| 117 | if (!t)
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| 118 | {
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| 119 | if (!returnFromIncluded())
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| 120 | {
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| 121 | abort();
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| 122 | break;
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| 123 | }
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| 124 | else
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| 125 | continue;
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| 126 | }
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| 127 | if (buf[0]=='#')
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| 128 | {
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| 129 | if (!strncmp(buf+1,"include",7))
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| 130 | {
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| 131 | const char* t=strchr(buf,'\"'),*t2=0;
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| 132 | if (t) t2=strchr(t+1,'\"');
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| 133 | if (t2)
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| 134 | {
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| 135 | SString filename(t+1,t2-t-1);
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| 136 | include(filename);
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| 137 | }
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| 138 | else
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| 139 | {
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| 140 | const char* thisfilename=file->VgetPath();
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| 141 | FMprintf("MultiParamLoader","go",FMLV_WARN,"invalid \"%s\"%s%s",buf,
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| 142 | (thisfilename?" in ":""),(thisfilename?thisfilename:""));
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| 143 | }
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| 144 | continue;
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| 145 | }
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| 146 | else if ((status!=Finished) && maybeBreak(OnComment))
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| 147 | {
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| 148 | lastcomment=t+1;
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| 149 | break;
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| 150 | }
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| 151 | }
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| 152 | t=trim(buf,linlen);
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| 153 | if ((linlen>1)&&(t[linlen-1]==':'))
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| 154 | {
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| 155 | lastunknown=0;
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| 156 | lastunknown.append(t,linlen-1);
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| 157 | lastclass=0;
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| 158 | FOREACH(ParamInterface*,pi,params)
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| 159 | {
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| 160 | if (!strcmp(pi->getName(),lastunknown)) { lastclass=pi; break; }
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| 161 | }
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| 162 | if (lastclass)
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| 163 | {
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| 164 | if (maybeBreak(BeforeObject))
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| 165 | break;
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| 166 | }
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| 167 | else
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| 168 | {
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| 169 | if (maybeBreak(BeforeUnknown))
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| 170 | break;
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| 171 | }
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| 172 |
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| 173 | }
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| 174 | }
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| 175 | return status;
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| 176 | }
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| 177 |
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| 178 | bool MultiParamLoader::alreadyIncluded(const char* filename)
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| 179 | {
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| 180 | int i;
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| 181 | const char* t;
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| 182 | for(i=0;i<filestack.size();i++)
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| 183 | {
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| 184 | t=filestack(i)->VgetPath();
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| 185 | if (!t) continue;
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| 186 | if (!strcmp(filename,t)) return true;
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| 187 | }
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| 188 | return false;
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| 189 | }
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| 190 |
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| 191 | void MultiParamLoader::include(SString& filename)
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| 192 | {
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| 193 | const char* thisfilename=file->VgetPath();
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| 194 | SString newfilename;
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| 195 | const char* t=thisfilename?strrchr(thisfilename,PATHSEPARATORCHAR):0;
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| 196 |
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| 197 | if (thisfilename && t)
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| 198 | {
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| 199 | newfilename.append(thisfilename,t-thisfilename+1);
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| 200 | newfilename+=filename;
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| 201 | }
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| 202 | else
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| 203 | newfilename=filename;
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| 204 |
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| 205 | if (alreadyIncluded(newfilename))
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| 206 | {
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| 207 | FMprintf("MultiParamLoader","include",FMLV_WARN,"circular reference ignored (\"%s\")",
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| 208 | (const char*)filename);
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| 209 | return;
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| 210 | }
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| 211 |
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| 212 | VirtFILE *f=Vfopen(newfilename,FOPEN_READ);
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| 213 | if (!f)
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| 214 | {
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| 215 | FMprintf("MultiParamLoader","include",FMLV_WARN,"\"%s\" not found",(const char*)newfilename);
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| 216 | }
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| 217 | else
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| 218 | {
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| 219 | filestack+=file;
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| 220 | file=f;
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| 221 | }
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| 222 | }
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| 223 |
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| 224 | VirtFILE* MultiParamLoader::popstack()
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| 225 | {
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| 226 | if (!filestack.size()) return 0;
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| 227 | VirtFILE* f=filestack(filestack.size()-1);
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| 228 | filestack.remove(filestack.size()-1);
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| 229 | return f;
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| 230 | }
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| 231 |
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| 232 | void MultiParamLoader::clearstack()
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| 233 | {
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| 234 | VirtFILE *f;
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| 235 | while(f=popstack()) fclose(f);
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| 236 | }
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| 237 |
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| 238 | bool MultiParamLoader::returnFromIncluded()
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| 239 | {
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| 240 | if (!filestack.size()) return false;
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| 241 | if (file) fclose(file);
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| 242 | file=popstack();
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| 243 | return true;
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| 244 | }
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| 245 |
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| 246 | int MultiParamLoader::loadObjectNow(ParamInterface *pi)
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| 247 | {
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| 248 | pi->load(file);
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| 249 | status=AfterObject;
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| 250 | return 0;
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| 251 | }
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| 252 |
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| 253 | int MultiParamLoader::run()
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| 254 | {
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| 255 | int stat;
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| 256 | breakOn(OnError);
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| 257 | while(stat=go())
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| 258 | if (stat==OnError)
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| 259 | {
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| 260 | abort();
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| 261 | return 0;
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| 262 | }
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| 263 | return 1;
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| 264 | }
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