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10 | reyssat | 1 | /* Copyright (C) 1998-2003 XIAO, Gang of Universite de Nice - Sophia Antipolis |
2 | * |
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3 | * This program is free software; you can redistribute it and/or modify |
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4 | * it under the terms of the GNU General Public License as published by |
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5 | * the Free Software Foundation; either version 2 of the License, or |
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6 | * (at your option) any later version. |
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7 | * |
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8 | * This program is distributed in the hope that it will be useful, |
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9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 | * GNU General Public License for more details. |
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12 | * |
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13 | * You should have received a copy of the GNU General Public License |
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14 | * along with this program; if not, write to the Free Software |
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15 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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16 | */ |
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17 | |||
18 | /* Computes class connection count (unit: student-minutes) */ |
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19 | |||
20 | #include "../wimsdef.h" |
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21 | #include "../includes.h" |
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3718 | reyssat | 22 | #include "../Lib/basicstr.c" |
10 | reyssat | 23 | |
24 | /* The maximal number of sessions within one day */ |
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25 | #define MAX_SESSIONS (128*1024) |
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26 | /* The maximal number of classes within one day */ |
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27 | #define MAX_CLASSES 8192 |
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28 | /* At least these minutes will be counted for each session */ |
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29 | #define MIN_CONNECT 2 |
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30 | /* Add this number of minutes to each session */ |
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31 | #define MIN_ADD 1 |
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32 | /* Accounting discontinues after this number of idle minutes */ |
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33 | #define MAX_LAPSE 15 |
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34 | |||
35 | struct { |
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36 | char s[4], u[32]; |
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37 | int cl, start, end, cnt; |
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38 | } ses[MAX_SESSIONS]; |
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39 | int sescnt; |
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40 | |||
41 | char *datestr; |
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42 | |||
43 | struct cls { |
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44 | int cl, cnt; |
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45 | } cls[MAX_CLASSES]; |
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46 | int clscnt; |
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47 | |||
48 | void *xmalloc(size_t n) |
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49 | { |
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50 | void *p; |
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51 | p=malloc(n); |
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52 | if(p==NULL) { |
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53 | fprintf(stderr,"Malloc failure."); exit(1); |
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54 | } |
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55 | return p; |
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56 | } |
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57 | |||
58 | /* Points to the end of the word */ |
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59 | char *find_word_end(char *p) |
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60 | { |
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61 | int i; |
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62 | for(i=0;!isspace(*p) && *p!=0 && i<MAX_LINELEN; p++,i++); |
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63 | return p; |
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64 | } |
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65 | |||
66 | /* Strips leading spaces */ |
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67 | char *find_word_start(char *p) |
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68 | { |
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69 | int i; |
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70 | for(i=0; isspace(*p) && i<MAX_LINELEN; p++,i++); |
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71 | return p; |
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72 | } |
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73 | |||
74 | /* Read/write to a file with variable parms to print filename */ |
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75 | void accessfile(char *content, char *type, char *s,...) |
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76 | { |
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77 | va_list vp; |
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78 | char buf[MAX_LINELEN+1]; |
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79 | FILE *f; |
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80 | int l; |
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81 | |||
82 | va_start(vp,s); |
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83 | vsnprintf(buf,sizeof(buf),s,vp); |
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84 | va_end(vp); |
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85 | f=fopen(buf,type); if(f==NULL) { |
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86 | if(*type=='r') content[0]=0; return; |
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87 | } |
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88 | switch(*type) { |
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89 | case 'a': |
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90 | case 'w': { |
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91 | l=strlen(content); fwrite(content,1,l,f); break; |
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92 | } |
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93 | case 'r': { |
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94 | l=fread(content,1,MAX_LINELEN-1,f); |
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95 | if(l>0 && l<MAX_LINELEN) content[l]=0; |
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96 | else content[0]=0; |
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97 | break; |
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98 | } |
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99 | default: { |
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100 | content[0]=0; break; |
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101 | } |
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102 | } |
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103 | fclose(f); |
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104 | } |
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105 | |||
106 | /* returns -1 if error */ |
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107 | long int filelength(char *fn,...) |
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108 | { |
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109 | char buf[4096]; |
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110 | va_list vp; |
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111 | struct stat st; |
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112 | int l; |
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113 | |||
114 | va_start(vp,fn); |
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115 | vsnprintf(buf,sizeof(buf),fn,vp); va_end(vp); |
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116 | l=stat(buf,&st); if(l) return -1; |
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117 | return st.st_size; |
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118 | } |
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119 | |||
120 | /* recursively generate a directory structure */ |
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121 | void mkdirs(char *s) |
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122 | { |
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123 | struct stat st; |
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124 | char *buf; |
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125 | if(stat(s,&st)==-1) { |
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126 | if(strrchr(s,'/')!=NULL) { |
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127 | buf=xmalloc(strlen(s)+1); |
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3718 | reyssat | 128 | ovlstrcpy(buf,s); *strrchr(buf,'/')=0; |
10 | reyssat | 129 | mkdirs(buf); free(buf); |
130 | } |
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131 | mkdir(s,-1); |
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132 | } |
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133 | } |
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134 | |||
135 | void oneline(char *p) |
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136 | { |
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137 | char tbuf[8], sbuf[8], ubuf[256], cbuf[64]; |
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138 | char *p1, *p2; |
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139 | int i,t,cl; |
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140 | memmove(tbuf,p+9,6); tbuf[2]=tbuf[5]=0; |
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141 | t=atoi(tbuf)*60+atoi(tbuf+3); |
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142 | memmove(sbuf,p+18,4); sbuf[4]=0; |
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143 | p1=strchr(p,','); if(p1==NULL) return; |
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144 | if(!isdigit(*(p1+1))) return; |
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145 | snprintf(cbuf,sizeof(cbuf),"%s",p1+1); |
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146 | for(p2=cbuf;isdigit(*p2); p2++); *p2=0; cl=atoi(cbuf); |
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147 | *p1=0; for(p1--;p1>p && !isspace(*(p1-1)); p1--); |
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148 | snprintf(ubuf,sizeof(ubuf),"%s",p1); |
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149 | for(i=0;i<sescnt;i++) { |
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150 | if(cl==ses[i].cl && memcmp(sbuf,ses[i].s,4)==0 && |
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151 | ses[i].end>=t-MAX_LAPSE) { |
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152 | ses[i].end=t; return; |
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153 | } |
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154 | } |
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155 | if(sescnt>=MAX_SESSIONS) return; |
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156 | memmove(ses[sescnt].s,sbuf,4); ses[sescnt].cl=cl; |
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157 | ses[sescnt].start=ses[sescnt].end=t; |
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158 | snprintf(ses[sescnt].u,sizeof(ses[sescnt].u),"%s",ubuf); |
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159 | sescnt++; |
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160 | } |
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161 | |||
162 | void onefile(char *fname) |
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163 | { |
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164 | FILE *f; |
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165 | long l; |
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166 | char *fbuf, *p1, *p2, *p3; |
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167 | l=filelength(fname); if(l<=0) return; |
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168 | f=fopen(fname,"r"); if(f==NULL) return; |
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3840 | kbelabas | 169 | fbuf=xmalloc(l+16); (void)fread(fbuf,1,l,f); fclose(f); fbuf[l]=0; |
10 | reyssat | 170 | for(p1=fbuf; *p1; p1=p2) { |
171 | p2=strchr(p1,'\n'); if(p2==NULL) p2=p1+strlen(p1); else *p2++=0; |
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172 | p3=strchr(p1,','); if(p3==NULL) continue; |
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173 | if(strncmp(p1,datestr,8)!=0) continue; |
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174 | oneline(p1); |
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175 | } |
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176 | } |
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177 | |||
178 | void classaccount(void) |
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179 | { |
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180 | int i,j; |
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181 | clscnt=0; |
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182 | for(i=0;i<sescnt;i++) { |
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183 | ses[i].cnt=ses[i].end-ses[i].start+MIN_ADD; |
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184 | if(ses[i].cnt<MIN_CONNECT) ses[i].cnt=MIN_CONNECT; |
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185 | for(j=0;j<clscnt && ses[i].cl!=cls[j].cl;j++); |
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186 | if(j<clscnt) cls[j].cnt+=ses[i].cnt; |
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187 | else if(clscnt<MAX_CLASSES) { |
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188 | cls[clscnt].cl=ses[i].cl; |
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189 | cls[clscnt].cnt=ses[i].cnt; |
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190 | clscnt++; |
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191 | } |
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192 | } |
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193 | } |
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194 | |||
195 | int clscmp(const void *c1, const void *c2) |
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196 | { |
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197 | struct cls *cl1, *cl2; |
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198 | cl1=(struct cls *) c1; cl2=(struct cls *) c2; |
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199 | return cl1->cl-cl2->cl; |
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200 | } |
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201 | |||
202 | void output(void) |
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203 | { |
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204 | char *p, buf[1024], dbuf[1024]; |
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205 | int i,t; |
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206 | p=getenv("ccsum_outdir"); if(p==NULL || *p==0) return; |
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207 | for(i=0;i<sescnt;i++) { |
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208 | snprintf(dbuf,sizeof(dbuf),"%s/%d",p,ses[i].cl); |
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209 | mkdirs(dbuf); |
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210 | snprintf(buf,sizeof(buf),"%s.%02d:%02d %d\n", |
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211 | datestr,ses[i].start/60,ses[i].start%60,ses[i].cnt); |
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212 | accessfile(buf,"a","%s/%s",dbuf,ses[i].u); |
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213 | } |
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214 | snprintf(dbuf,sizeof(dbuf),"%s/bydate/%.4s",p,datestr); |
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215 | mkdirs(dbuf); |
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216 | snprintf(dbuf+strlen(dbuf),sizeof(dbuf)-strlen(dbuf),"/%.2s",datestr+4); |
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217 | t=0; |
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218 | qsort(cls,clscnt,sizeof(cls[0]),clscmp); |
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219 | for(i=0;i<clscnt;i++) { |
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220 | snprintf(buf,sizeof(buf),"%s %d\n",datestr,cls[i].cnt); |
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221 | accessfile(buf,"a","%s/%d/.total",p,cls[i].cl); |
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222 | snprintf(buf,sizeof(buf),"%s %d %d\n",datestr+4,cls[i].cl,cls[i].cnt); |
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223 | accessfile(buf,"a","%s",dbuf); |
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224 | t+=cls[i].cnt; |
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225 | } |
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226 | snprintf(buf,sizeof(buf),"%s %d %d\n",datestr,t,(t+30)/60); |
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227 | accessfile(buf,"a","%s/done",p); |
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228 | } |
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229 | |||
230 | int main(int argc, char *argv[]) |
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231 | { |
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232 | sescnt=0; |
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233 | if(argc<2) return 1; |
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234 | datestr=getenv("ccsum_date"); |
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235 | if(datestr==NULL || strlen(datestr)!=8) return 2; |
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236 | onefile(argv[1]); |
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237 | classaccount(); |
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238 | output(); |
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239 | return 0; |
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240 | } |
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241 |