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1.1 root 1: # include "stdio.h"
2: # include "assert.h"
3: # include "ctype.h"
4:
5: main(argc,argv)
6: char *argv[];
7: {
8: /* arguments are keys of a paper */
9: /* output is file & lines to drop */
10: char answer[200], filname[60], outname[60];
11: int nuse = 0, i, c, length, line1, line2;
12: long l, start;
13: FILE *lkin, *lkout, *fin, *fout;
14: char *select = 0;
15: extern char *indexes;
16: lkin = fopen("/dev/null", "w");
17: lkout = fopen("/dev/null", "r");
18: _assert (lkin !=NULL); _assert (lkout!=NULL);
19: while (argc>1 &&argv[1][0]=='-')
20: {
21: switch(argv[1][1])
22: {
23: case 'p': /* use private index files */
24: indexes = argv[2];
25: argv += 2; argc -= 2;
26: continue;
27: case 'u': /* use the Nth item */
28: nuse = atoi(argv[1]+2);
29: argv++; argc--;
30: continue;
31: case 's': /* insist on a particular string */
32: select = argv[2];
33: argv += 2; argc -= 2;
34: continue;
35: default:
36: fprintf(stderr, "unknown option %s\n",argv[1]);
37: argv++; argc--;
38: continue;
39: }
40: }
41: lookup(lkin, lkout);
42: if (argc<=1) fprintf(stderr, "No search keys\n");
43: _assert (argc>1);
44: for(i=1; i<argc; i++)
45: fprintf(lkin, "%s ", argv[i]);
46: fprintf(lkin, "\n");
47: fclose(lkin);
48: /* skip items up to nuse */
49: for(i=1; i<nuse; i++)
50: geta(answer, lkout, select);
51: /* get the right answer */
52: i = geta(answer, lkout, select);
53: if (i==0)
54: {
55: fprintf(stderr, "No match\n");
56: exit(1);
57: }
58: sscanf(answer, "%[^:]:%ld,%d", filname, &start, &length);
59: if (nuse<=0 && geta(answer, lkout, select)>0)
60: {
61: fprintf(stderr, "Not unique - use lookbib and either -s or -u\n");
62: exit(1);
63: }
64: fclose(lkout);
65: assert(strlen(filname)>0));
66: fin = fopen(filname, "r");
67: _assert (fin!=NULL);
68: c=0;
69: for(i=getpid()%990; 1; i++)
70: {
71: _assert (c++<100);
72: sprintf(outname, "bib%03d", i);
73: if (access(outname, 06) != 0)
74: break;
75: }
76: printf("Will delete: (file %s)\n\n", outname);
77: line1 = 1;
78: for(l=0; l<start; l++)
79: {
80: c = getc(fin);
81: _assert (c!=EOF);
82: if (c=='\n')
83: line1++;
84: }
85: line2=line1;
86: for(i=0; i<length; i++)
87: {
88: c = getc(fin);
89: _assert (c != EOF);
90: putchar(c);
91: if (c== '\n')
92: line2++;
93: }
94: fclose(fin);
95: fout = fopen(outname, "w");
96: fprintf(fout, "%%# %s %d %d delete %ld %d\n",
97: filname, line1, line2-1,start, length);
98: fclose(fout);
99: }
100: geta(answer, f, str)
101: char *answer, *str;
102: FILE *f;
103: {
104: answer[0]=0;
105: while (answer[0]==0 && feof(f)==0)
106: {
107: answer[0]=0;
108: fgets(answer, 200, f);
109: trim(answer);
110: if (contain(answer, str)==0)
111: answer[0]=0;
112: }
113: return( answer[0]!=0);
114: }
115: contain(answer, str)
116: char *answer, *str;
117: {
118: char filname[100]; long start; int length;
119: int ft;
120: char buff[1000], *s, *st;
121: if (str==0) return(1);
122: if (answer[0]==0) return(1);
123: sscanf(answer, "%[^:]:%ld,%d", filname, &start, &length);
124: assert(strlen(filname)>0));
125: ft = open(filname, 0);
126: assert(ft>=0);
127: lseek(ft, start, 0);
128: if (length>1000) length=1000;
129: length = read(ft, buff, length);
130: close(ft);
131: buff[length]=0;
132: st = buff+length;
133: for(s=buff; s<st; s++)
134: if (prefix(str, s))
135: return(1);
136: return(0);
137: }
138: prefix(sh,lg)
139: char *sh, *lg;
140: {
141: int c;
142: while ( (c= *sh++) == *lg++)
143: {
144: if (c==0)
145: return(1);
146: }
147: return(c==0);
148: }
149: trim(s)
150: char *s;
151: {
152: while (*s)s++;
153: if (*--s=='\n') *s=0;
154: }
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