Annotation of loncom/homework/CAPA-converter/capaCommon.c, revision 1.2
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: {
114: int errcode;
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; }*/
155: if (!yylex()) { errcode = Lexi_qnum; } else { errcode = 0; }
156: /* fclose(Input_stream[0]);*/ /*The Lexer handles closing this*/
157: /* print_symb_stat(); */
158: /*
159: capa_mfree((char *)LexiProblem_p);
160: LexiProblem_p = NULL;
161: */
162: (*problem) = FirstProblem_p;
163: (*num_questions) = Lexi_qnum;
164: return (errcode);
165: }
166:
1.2 ! albertel 167: char* delayed;
! 168: void send(char *text,...)
1.1 albertel 169: {
1.2 ! albertel 170: va_list ap;
! 171: if (delayed) {printf(delayed);free(delayed);delayed=NULL;}
! 172: va_start(ap,text);
! 173: vprintf(text,ap);
! 174: }
! 175:
! 176: void send_delayed(char *text,...)
! 177: {
! 178: va_list ap;
! 179: va_start(ap,text);
! 180: vasprintf(&delayed,text,ap);
! 181: }
! 182:
! 183: void remove_delayed()
! 184: {
! 185: if (delayed) {free(delayed);delayed=NULL;}
1.1 albertel 186: }
187: /* =||>|===================== End of capaCommon.c =====================|<||= */
188:
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