1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
/* SC A Spreadsheet Calculator
* Abbreviations
*
* Chuck Martin <nrocinu@myrealbox.com>
* Originally created: November, 2001
*
* $Revision: 7.16 $
*/
#include <sys/types.h>
#ifdef BSD42
#include <strings.h>
#else
#ifndef SYSIII
#include <string.h>
#endif
#endif
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <curses.h>
#include <unistd.h>
#include "sc.h"
static struct abbrev *abbr_base;
int are_abbrevs(void);
void
add_abbr(char *string)
{
struct abbrev *a;
register char *p;
struct abbrev *prev = NULL;
char *expansion;
if (!string || *string == '\0') {
if (!are_abbrevs()) {
error("No abbreviations defined");
return;
} else {
FILE *f;
int pid;
char px[MAXCMD];
char *pager;
struct abbrev *a;
struct abbrev *nexta;
(void) strcpy(px, "| ");
if (!(pager = getenv("PAGER")))
pager = DFLT_PAGER;
(void) strcat(px, pager);
f = openfile(px, &pid, NULL);
if (!f) {
error("Can't open pipe to %s", pager);
return;
}
(void) fprintf(f, "\n%-15s %s\n","Abbreviation","Expanded");
if (!brokenpipe) (void) fprintf(f, "%-15s %s\n", "------------",
"--------");
for (a = nexta = abbr_base; nexta; a = nexta, nexta = a->a_next)
;
while (a) {
(void) fprintf(f, "%-15s %s\n", a->abbr, a->exp);
if (brokenpipe) return;
a = a->a_prev;
}
closefile(f, pid, 0);
return;
}
}
if ((expansion = strchr(string, ' ')))
*expansion++ = '\0';
if (isalpha(*string) || isdigit(*string) || *string == '_') {
for (p = string; *p; p++)
if (!(isalpha(*p) || isdigit(*p) || *p == '_')) {
error("Invalid abbreviation: %s", string);
scxfree(string);
return;
}
} else {
for (p = string; *p; p++)
if ((isalpha(*p) || isdigit(*p) || *p == '_') && *(p+1)) {
error("Invalid abbreviation: %s", string);
scxfree(string);
return;
}
}
if (expansion == NULL){
if ((a = find_abbr(string, strlen(string), &prev))) {
error("abbrev \"%s %s\"", a->abbr, a->exp);
return;
} else {
error("abreviation \"%s\" doesn't exist", string);
return;
}
}
if (find_abbr(string, strlen(string), &prev))
del_abbr(string);
a = (struct abbrev *)scxmalloc((unsigned)sizeof(struct abbrev));
a->abbr = string;
a->exp = expansion;
if (prev) {
a->a_next = prev->a_next;
a->a_prev = prev;
prev->a_next = a;
if (a->a_next)
a->a_next->a_prev = a;
} else {
a->a_next = abbr_base;
a->a_prev = NULL;
if (abbr_base)
abbr_base->a_prev = a;
abbr_base = a;
}
}
void
del_abbr(char *abbrev)
{
struct abbrev *a;
struct abbrev **prev=0;
if (!(a = find_abbr(abbrev, strlen(abbrev), prev)))
return;
if (a->a_next)
a->a_next->a_prev = a->a_prev;
if (a->a_prev)
a->a_prev->a_next = a->a_next;
else
abbr_base = a->a_next;
scxfree((char *)(a->abbr));
scxfree((char *)a);
}
struct abbrev *
find_abbr(char *abbrev, int len, struct abbrev **prev)
{
struct abbrev *a;
int cmp;
int exact = TRUE;
if (len < 0) {
exact = FALSE;
len = -len;
}
for (a = abbr_base; a; a = a->a_next) {
if ((cmp = strncmp(abbrev, a->abbr, len)) > 0)
return (NULL);
*prev = a;
if (cmp == 0)
if (!exact || strlen(a->abbr) == len)
return (a);
}
return NULL;
}
void
write_abbrevs(FILE *f)
{
register struct abbrev *a;
register struct abbrev *nexta;
for (a = nexta = abbr_base; nexta; a = nexta, nexta = a->a_next) /* */ ;
while (a) {
(void) fprintf(f, "abbrev \"%s\" \"%s\"\n", a->abbr, a->exp);
a = a->a_prev;
}
}
int
are_abbrevs()
{
return (abbr_base != 0);
}
|
