Annotation of loncom/homework/CAPA-converter/capaCommon.c, revision 1.9
1.1 albertel 1: /* =||>|===================== capaCommon.c =====================|<||= */
2: /* created 1994 by Isaac Tsai */
3: /* 1994, 1995, 1996, 1997, 1998, 1999 copyrighted by Isaac Tsai */
4: /* TODO: restructure capa_check_ans*() calls into one */
5: /* =||>|===================== capaCommon.c =====================|<||= */
6: #include <ctype.h>
7: #if defined(__sun) || defined(linux) || defined(__alpha) || defined(hpux) || defined(AIX) || defined(IRIX)
8: #include <unistd.h> /* lockf() */
9: #endif
10: #include <sys/types.h>
11: #include <sys/stat.h>
12: #include <fcntl.h>
13: #include "capaParser.h"
14: #include "capaToken.h"
15: #include "capaCommon.h"
16: #include "ranlib.h"
17:
18:
19: /*----------------------------------------------------------*/
20: /* flock() in SUN is in BSD compatibility lib */
21: /* #include <sys/file.h> */
22: /*----------------------------------------------------------*/
23: char Parse_class[QUARTER_K];
24: int Parse_set;
25: int Parse_section;
26: char Parse_student_number[MAX_STUDENT_NUMBER+1];
27: char Parse_name[MAX_NAME_CHAR+1];
28: long capaid_plus_gen;
29: int managermode;
30:
31: int yyparse();
32: int yylex();
33: extern FILE *yyin;
34: extern void yyrestart();
35:
36:
37: /*----------------------------------------------------------*/
38: /* Lock file shared */
39: /* lock the file specified by file stream pointer sp */
40: /*----------------------------------------------------------*/
41: int
42: flockstream_sh(sp) FILE *sp;
43: {
44: int fd;
45:
46: fd = fileno(sp);
47:
48: #if defined(__sun) || defined(hpux) || defined(AIX)
49: return ( lockf(fd,F_LOCK, 0L) );
50: #else
51: return (flock(fd,LOCK_SH));
52: #endif
53: }
54: /*----------------------------------------------------------*/
55: int
56: flockstream(sp) FILE *sp;
57: {
58: int fd;
59:
60: fd = fileno(sp);
61:
62: #if defined(__sun) || defined(hpux) || defined(AIX)
63: return ( lockf(fd,F_LOCK, 0L) );
64: #else
65: return (flock(fd,LOCK_EX));
66: #endif
67: }
68: /*----------------------------------------------------------*/
69: int
70: funlockstream(sp) FILE *sp;
71: {
72: int fd;
73:
74: fd = fileno(sp);
75:
76: #if defined(__sun) || defined(hpux) || defined(AIX)
77: return ( lockf(fd,F_ULOCK, 0L) );
78: #else
79: return ( flock(fd,LOCK_UN) );
80: #endif
81: }
82:
83: int
84: inquery_a_lock(sp,cmd,type,offset,whence,len)
85: FILE *sp;int cmd;off_t offset;int whence;off_t len;
86: {
87: struct flock lock;
88: int fd;
89: lock.l_type = type; lock.l_start = offset;
90: lock.l_whence = whence; lock.l_len = len;
91: fd=fileno(sp);
92: return (fcntl(fd,cmd,&lock));
93: }
94: #define Blocked_Write_Lock(sp) \
95: inquery_a_lock(sp,F_SETLK,F_WRLCK,0,0,0)
96:
97: #define Blocked_Write_Lock(sp) \
98: inquery_a_lock(sp,F_SETLK,F_WRLCK,0,0,0)
99:
100: #define Un_Lock(sp) \
101: inquery_a_lock(sp,F_SETLK,F_UNLCK,0,0,0)
102:
103:
104:
105:
106: /******************************************************************************/
107: /* PARSE SOURCE FILE AND RETURN BLOCKS OF TEXT, unlike capa_parse_student */
108: /******************************************************************************/
109: int
110: capa_parse(set,problem,filename,num_questions,func_ptr)
111: int set;Problem_t **problem;char *filename;int *num_questions;
112: void (*func_ptr)();
113: {
1.3 albertel 114: int errcode,temp;
1.1 albertel 115: extern FILE *Input_stream[MAX_OPENED_FILE];
116: extern char Opened_filename[MAX_OPENED_FILE][QUARTER_K];
117: extern int Lexi_line;
118: extern int Lexi_qnum;
119: extern Problem_t *FirstProblem_p;
120: extern Problem_t *LastProblem_p;
121: extern Problem_t *LexiProblem_p;
122: extern char *StartText_p;
123: extern char *EndText_p;
124: extern char *ErrorMsg_p;
125: extern int ErrorMsg_count;
126: extern int Symb_count;
127: extern int first_run;
128: extern void (*Status_Func)();
129: char warn_msg[WARN_MSG_LENGTH];
130:
131: if(ErrorMsg_p) { capa_mfree(ErrorMsg_p); ErrorMsg_p = NULL; }
132: if(EndText_p) { capa_mfree(EndText_p); EndText_p = NULL; }
133: if(StartText_p) { capa_mfree(StartText_p); StartText_p = NULL; }
134: ErrorMsg_p = NULL; first_run = 1; EndText_p = NULL;
135: Symb_count = ErrorMsg_count = Lexi_line = Lexi_qnum = 0;
136: FirstProblem_p = LastProblem_p = NULL;
137: LexiProblem_p = (Problem_t *)capa_malloc(sizeof(Problem_t),1);
138: Status_Func=func_ptr;
139:
140: #ifdef AVOIDYYINPUT
141: yyin=fopen(filename,"r");
142: #else
143: if ( (Input_stream[0]=fopen(filename,"r")) == NULL) {
144: /* printf("Error: can't open %s\n",filename);*/
145: sprintf(warn_msg,"capa_parse(): CANNOT OPEN FILE\"%s\", file does not exist or is not readable.\n", filename);
146: capa_msg(MESSAGE_ERROR,warn_msg);
147: return (-1);
148: }
149: #endif
150: sprintf(Opened_filename[0],"%s",filename);
151:
152: /*yyrestart(yyin);*/
153: begin_text();
154: /*if ( !yyparse() ) { errcode = Lexi_qnum; } else { errcode = 0; }*/
1.3 albertel 155: if (!(temp=yylex())) { errcode = Lexi_qnum; } else { errcode = 0; }
1.9 ! albertel 156: fprintf(stderr,"\nExited on: %d\n",temp);
! 157: fprintf(stderr,"Current cache: %d\n",current_cache);
! 158: fprintf(stderr,"Flushing:\n");
1.3 albertel 159: flush_delayed();
1.1 albertel 160: /* fclose(Input_stream[0]);*/ /*The Lexer handles closing this*/
161: /* print_symb_stat(); */
162: /*
163: capa_mfree((char *)LexiProblem_p);
164: LexiProblem_p = NULL;
165: */
166: (*problem) = FirstProblem_p;
167: (*num_questions) = Lexi_qnum;
168: return (errcode);
169: }
170:
1.3 albertel 171: int dyn_maxlen=1000000;
172: int delay;
1.9 ! albertel 173: void dyn_init(struct dyn_string *dyn)
1.3 albertel 174: {
1.9 ! albertel 175: dyn->len=0;
! 176: dyn->max=0;
! 177: dyn->str=NULL;
1.3 albertel 178: }
179:
1.9 ! albertel 180: void dyn_free(struct dyn_string* dyn)
1.3 albertel 181: {
1.9 ! albertel 182: if (dyn->str) {
! 183: free(dyn->str);dyn->str=NULL;
! 184: dyn->len=0;
! 185: dyn->max=0;
! 186: }
1.3 albertel 187: }
188:
1.9 ! albertel 189:
1.3 albertel 190: int append_message(struct dyn_string *dyn_msg,char *format,va_list ap) {
191: char *new;
192: int len,result;
193:
1.9 ! albertel 194: if ((result=vasprintf(&new,format,ap))==-1) {
! 195: fprintf(stderr,"vaspintf didn't like :%s:",format);
! 196: exit(1);
! 197: }
1.3 albertel 198: len=strlen(new);
199:
200: #ifdef DYN_DEBUG
201: fprintf(stderr,"before: len %d; gcount %d; max %d\n",
202: len,dyn_msg->len,dyn_msg->max);
203: #endif /* DYN_DEBUG */
204:
205: if (dyn_msg->len+len < dyn_maxlen) {
206: if (dyn_msg->len+len>dyn_msg->max-2) {
207: dyn_msg->max=(dyn_msg->len+len)*2;
208: if (dyn_msg->max>dyn_maxlen) { dyn_msg->max=dyn_maxlen; }
209: if (dyn_msg->max != 0) {
210: dyn_msg->str=realloc(dyn_msg->str,dyn_msg->max);
211: } else {
212: return 1;
213: }
214: dyn_msg->str[dyn_msg->len]='\0';
215: }
216: strcat(dyn_msg->str,new);
217: dyn_msg->len+=len;
218: } else {
219: if (dyn_msg->max != dyn_maxlen-1) { /*already maxed out or can
220: we fit this one in?*/
221: dyn_msg->max=dyn_maxlen;
222: dyn_msg->str=realloc(dyn_msg->str,dyn_msg->max);
223: dyn_msg->str[dyn_msg->len]='\0';
224: strncat(dyn_msg->str,new,dyn_msg->max-dyn_msg->len-1);
225: dyn_msg->len=strlen(dyn_msg->str);
226: }
227: }
228: free(new);
229:
230: #ifdef DYN_DEBUG
231: fprintf(stderr,"after: len %d; gcount %d; max %d; strlen(dyn_msg): %d\n",
232: len,dyn_msg->len,dyn_msg->max,strlen(dyn_msg->str));
233: #endif /* DYN_DEBUG */
234:
235: return 1;
236: }
237:
238: void start_delayed(){ delay=1; }
239: void end_delayed(){ delay=0; }
240:
1.4 albertel 241: void add_delayed(char *format, ...) {
1.3 albertel 242: va_list ap;
243:
244: va_start(ap,format);
245: append_message(&dyn_delayed,format,ap);
1.9 ! albertel 246: if (do_cache[current_cache]) {
! 247: append_message(&cached_data[current_cache],format,ap);
! 248: }
! 249: }
1.3 albertel 250:
251: void flush_delayed()
252: {
253: delay=0;
1.9 ! albertel 254: if (dyn_delayed.str) { send(dyn_delayed.str); }
! 255: dyn_free(&dyn_delayed);dyn_init(&dyn_delayed);
1.3 albertel 256: }
257:
1.9 ! albertel 258:
! 259: void send_to(int which, char *text, va_list ap)
1.1 albertel 260: {
1.3 albertel 261: if (delay) {
262: append_message(&dyn_delayed,text,ap);
263: } else {
1.9 ! albertel 264: if (num_streams) {
! 265: if (which == ALL_STREAMS) {
! 266: int i;
! 267: for (i=0;i<num_streams;i++) { append_message(&streams[i],text,ap); }
! 268: } else {
! 269: append_message(&streams[which],text,ap);
! 270: }
! 271: } else {
! 272: vprintf(text,ap);
! 273: }
1.3 albertel 274: }
1.9 ! albertel 275: if (do_cache[current_cache]) {
! 276: append_message(&cached_data[current_cache],text,ap);
! 277: }
! 278: }
! 279:
! 280: void send(char *text,...)
! 281: {
! 282: va_list ap;
! 283: va_start(ap,text);
! 284: send_to(ALL_STREAMS,text,ap);
1.2 albertel 285: }
286:
1.9 ! albertel 287: void send_stream(int which, char *text,...)
! 288: {
! 289: va_list ap;
! 290: va_start(ap,text);
! 291: send_to(which,text,ap);
! 292: }
! 293:
! 294: int num_streams=0;
! 295: struct dyn_string streams[MAX_STREAMS];
! 296: void start_streams(int num) {
! 297: int i;
! 298: for(i=0; i<num; i++) { dyn_init(&streams[i]); }
! 299: for(i=1; i<num; i++) { mode[i]=mode[0]; }
! 300: num_streams=num;
! 301: }
! 302:
! 303: void end_streams(int which) {
! 304: int i;
! 305: fputs(streams[which].str,stdout);
! 306: for(i=0; i<num_streams; i++) { dyn_free(&streams[which]); }
! 307: num_streams=0;
! 308: mode[0]=mode[which];
! 309: }
! 310:
! 311: int watch_mode[MAX_STREAMS];
1.3 albertel 312: void end_mode()
1.2 albertel 313: {
1.9 ! albertel 314: end_mode_stream(ALL_STREAMS);
! 315: }
! 316:
! 317: void end_mode_stream(int which)
! 318: {
! 319: if (num_streams) {
! 320: if (which == ALL_STREAMS) {
! 321: int i;
! 322: for (i=0;i<num_streams;i++) { end_mode_stream(i); }
! 323: return;
! 324: }
! 325: } else {
! 326: which=0;/* if streams aren't active make sure which is correct */
! 327: }
! 328: switch (mode[which]) {
! 329: case MODE_COMMENT: send_stream(which,"</comment>\n"); break;
! 330: case MODE_BLOCK: send_stream(which,"</block>\n"); break;
! 331: case MODE_SCRIPT: send_stream(which,"</script>\n"); break;
! 332: case MODE_OUTTEXT: send_stream(which,"<endouttext />\n"); break;
! 333: case MODE_ANSWER: send_stream(which,"\n"); break;
! 334: case MODE_HINT: send_stream(which,"<endouttext />\n</hintpart>\n</hintgroup>\n"); break;
! 335: case MODE_IMPORT: send_stream(which,"</import>\n"); break;
1.3 albertel 336: case MODE_NONE: break;
337: }
1.9 ! albertel 338: mode[which]=MODE_NONE;
! 339: watch_mode[which]=0;
1.2 albertel 340: }
341:
1.3 albertel 342: void start_mode(int newmode,char* args)
1.2 albertel 343: {
1.9 ! albertel 344: start_mode_stream(ALL_STREAMS,newmode,args);
! 345: }
! 346:
! 347: void start_mode_stream(int which,int newmode,char* args)
! 348: {
! 349: if (num_streams) {
! 350: if (which == ALL_STREAMS) {
! 351: int i;
! 352: for (i=0;i<num_streams;i++) { start_mode_stream(i,newmode,args); }
! 353: return;
! 354: } else {
! 355: if (newmode == mode[which]) return;
! 356: }
! 357: } else {
! 358: if (newmode == mode[0]) return;
! 359: which=0;/* if streams aren't active make sure which is correct */
! 360: }
! 361: end_mode_stream(which);
1.3 albertel 362: switch (newmode) {
1.9 ! albertel 363: case MODE_COMMENT: send_stream(which,"<comment>\n"); break;
! 364: case MODE_BLOCK: send_stream(which,"<block %s>\n",args); break;
! 365: case MODE_SCRIPT: send_stream(which,"<script type=\"loncapa/perl\">\n"); break;
! 366: case MODE_OUTTEXT: send_stream(which,"<startouttext />\n"); break;
! 367: case MODE_ANSWER: send_stream(which,"\n"); break;
! 368: case MODE_HINT: send_stream(which,"<hintgroup>\n<hintpart on=\"default\">\n<startouttext />\n"); break;
! 369: case MODE_IMPORT: send_stream(which,"<import>"); break;
1.3 albertel 370: case MODE_NONE: break;
371: }
1.9 ! albertel 372: mode[which]=newmode;
! 373: }
! 374:
! 375: int current_cache=-1;
! 376: int do_cache[MAX_CACHE];
! 377: struct dyn_string cached_data[MAX_CACHE];
! 378:
! 379: void new_cache()
! 380: {
! 381: current_cache++;
! 382: do_cache[current_cache]=1;
! 383: if (current_cache>MAX_CACHE) { exit(CACHE_ERROR); }
! 384: dyn_init(&cached_data[current_cache]);
! 385: }
! 386:
! 387: void start_cache()
! 388: {
! 389: do_cache[current_cache]=1;
! 390: }
! 391:
! 392: void stop_cache()
! 393: {
! 394: do_cache[current_cache]=0;
! 395: }
! 396:
! 397: void delete_cache()
! 398: {
! 399: if (current_cache > -1) {
! 400: dyn_free(&cached_data[current_cache]);
! 401: current_cache--;
! 402: }
1.1 albertel 403: }
404: /* =||>|===================== End of capaCommon.c =====================|<||= */
405:
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