Annotation of OpenXM_contrib2/windows/asir32gui/readline.c, Revision 1.1.1.1
1.1 noro 1: //#include <sys/file.h>
2: #include <stdlib.h>
3: #include <stdio.h>
4: #include <fcntl.h>
5: #include <ctype.h>
6: //#include <sys/types.h>
7: //#include <sys/stat.h>
8:
9: #define CTRL(c) ((c)&037)
10:
11: char *search_hist(),*next_hist(),*prev_hist();
12:
13: static char **hist_table;
14: static int hist_full, hist_current, hist_length;
15: static int hist_traverse, hist_traverse_index;
16:
17: #define CURRENT (hist_table[hist_current])
18:
19: init_hist(max)
20: int max;
21: {
22: hist_length = max;
23: hist_table = (char **)GC_malloc(hist_length*sizeof(char *));
24: hist_full = 0;
25: hist_current = -1;
26: }
27:
28: add_hist(p)
29: char *p;
30: {
31: if ( hist_current >= 0 && !strcmp(p,CURRENT) )
32: return;
33: hist_current++;
34: if ( hist_current == hist_length ) {
35: hist_current = 0;
36: hist_full = 1;
37: }
38: CURRENT = (char *)GC_malloc_atomic(strlen(p)+1);
39: strcpy(CURRENT,p);
40: }
41:
42: char *search_hist(p)
43: char *p;
44: {
45: int len,slen,index,i;
46:
47: if ( *p == '!' ) {
48: if ( hist_current < 0 )
49: return 0;
50: else
51: return CURRENT;
52: }
53: slen = strlen(p);
54: len = hist_full ? hist_length : hist_current+1;
55: index = hist_current;
56: for ( i = len; i; i--, index-- ) {
57: if ( index < 0 )
58: index += hist_length;
59: if ( !strncmp(p,hist_table[index],slen) )
60: return hist_table[index];
61: }
62: return 0;
63: }
64:
65: read_hist(fname)
66: char *fname;
67: {
68: int l;
69: char buf[BUFSIZ];
70: FILE *fp;
71:
72: if ( !(fp = fopen(fname,"rb")) )
73: return;
74: while ( fgets(buf,BUFSIZ-1,fp) ) {
75: l = strlen(buf);
76: if ( buf[l-1] == '\n' )
77: buf[l-1] = 0;
78: add_hist(buf);
79: }
80: fclose(fp);
81: }
82:
83: write_hist(fname)
84: char *fname;
85: {
86: int len,index,i;
87: FILE *fp;
88:
89: if ( !(fp = fopen(fname,"wb")) )
90: return;
91: len = hist_full ? hist_length : hist_current+1;
92: index = hist_full ? hist_current+1 : 0;
93: for ( i = 0; i < len; i++, index++ ) {
94: if ( index >= hist_length )
95: index -= hist_length;
96: fprintf(fp,"%s\n",hist_table[index]);
97: }
98: fclose(fp);
99: }
100:
101: char *next_hist() {
102: if ( !hist_traverse || hist_traverse_index == hist_current )
103: return 0;
104: else {
105: hist_traverse_index = (hist_traverse_index+1) % hist_length;
106: return hist_table[hist_traverse_index];
107: }
108: }
109:
110: char *prev_hist() {
111: if ( !hist_traverse ) {
112: if ( hist_current >= 0 ) {
113: hist_traverse = 1;
114: hist_traverse_index = hist_current;
115: return hist_table[hist_traverse_index];
116: } else
117: return 0;
118: } else {
119: hist_traverse_index--;
120: if ( hist_traverse_index < 0 )
121: if ( hist_full )
122: hist_traverse_index += hist_length;
123: else
124: hist_traverse_index = 0;
125: return hist_table[hist_traverse_index];
126: }
127: }
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