1 |
greg |
1.1 |
#ifndef lint |
2 |
greg |
2.9 |
static const char RCSid[] = "$Id: editline.c,v 2.8 2004/03/30 16:13:01 schorsch Exp $"; |
3 |
greg |
1.1 |
#endif |
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/* |
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* editline.c - routine for editing raw input for rview. |
6 |
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* |
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greg |
2.4 |
* External symbols declared in driver.h |
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*/ |
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10 |
greg |
2.5 |
#include "copyright.h" |
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greg |
2.6 |
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12 |
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#include <stdio.h> |
13 |
schorsch |
2.8 |
#include <string.h> |
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greg |
1.1 |
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15 |
greg |
2.4 |
#include "color.h" |
16 |
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#include "driver.h" |
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greg |
1.2 |
#define iscntrl(c) ((c) < ' ') |
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#define isblank(c) ((c) == ' ') |
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#define iserase(c) ((c) == '\b' || (c) == 127) |
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#define iswerase(c) ((c) == 'W'-'@') |
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#define iskill(c) ((c) == 'U'-'@' || (c) == 'X'-'@') |
24 |
greg |
1.1 |
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25 |
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26 |
greg |
2.9 |
void |
27 |
schorsch |
2.8 |
editline( /* edit input line */ |
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char *buf, |
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dr_getchf_t *c_get, |
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dr_comoutf_t *s_put |
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) |
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greg |
1.1 |
{ |
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static char erases[] = "\b \b"; |
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static char obuf[4]; |
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greg |
2.9 |
int i; |
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int c; |
37 |
greg |
1.1 |
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i = 0; |
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while ((c = (*c_get)()&0177) != '\n' && c != '\r') |
40 |
greg |
1.2 |
if (iserase(c)) { /* single char erase */ |
41 |
greg |
1.1 |
if (i > 0) { |
42 |
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(*s_put)(erases); |
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--i; |
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} |
45 |
greg |
1.2 |
} else if (iswerase(c)) { /* word erase */ |
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while (i > 0 && isblank(buf[i-1])) { |
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(*s_put)(erases); |
48 |
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--i; |
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} |
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while (i > 0 && !isblank(buf[i-1])) { |
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(*s_put)(erases); |
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--i; |
53 |
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} |
54 |
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} else if (iskill(c)) { /* kill line */ |
55 |
greg |
1.1 |
while (i > 0) { |
56 |
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(*s_put)(erases); |
57 |
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--i; |
58 |
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} |
59 |
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} else if (iscntrl(c)) { /* control char */ |
60 |
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i = 0; |
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buf[i++] = c; |
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obuf[0] = '^'; obuf[1] = c|0100; obuf[2] = '\0'; |
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(*s_put)(obuf); |
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break; |
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} else { /* regular char */ |
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buf[i++] = c; |
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obuf[0] = c; obuf[1] = '\0'; |
68 |
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(*s_put)(obuf); |
69 |
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} |
70 |
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buf[i] = '\0'; |
71 |
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(*s_put)("\n"); |
72 |
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} |
73 |
greg |
1.3 |
|
74 |
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75 |
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static char mybuf[512]; |
76 |
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78 |
greg |
2.4 |
void |
79 |
greg |
2.9 |
tocombuf( /* add command(s) to my buffer */ |
80 |
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char *b, |
81 |
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struct driver *d |
82 |
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) |
83 |
greg |
1.3 |
{ |
84 |
greg |
2.9 |
char *cp; |
85 |
greg |
2.3 |
char *comstart; |
86 |
greg |
2.2 |
|
87 |
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for (cp = mybuf; *cp; cp++) |
88 |
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; |
89 |
greg |
2.3 |
comstart = cp; |
90 |
schorsch |
2.7 |
while ( (*cp++ = *b) ) |
91 |
greg |
2.3 |
if (cp >= mybuf+sizeof(mybuf)) { |
92 |
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*comstart = '\0'; |
93 |
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return; /* what should I do about this? */ |
94 |
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} else if (*b++ == '\n') { |
95 |
greg |
2.2 |
d->inpready++; |
96 |
greg |
2.3 |
comstart = cp; |
97 |
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} |
98 |
greg |
1.3 |
} |
99 |
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100 |
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101 |
greg |
2.4 |
int |
102 |
greg |
2.9 |
fromcombuf( /* get command from my buffer */ |
103 |
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char *b, |
104 |
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struct driver *d |
105 |
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) |
106 |
greg |
1.3 |
{ |
107 |
greg |
2.9 |
char *cp, *cp1; |
108 |
greg |
1.3 |
/* get next command */ |
109 |
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for (cp = mybuf; *cp != '\n'; cp++) |
110 |
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if (!*cp) |
111 |
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return(0); |
112 |
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*cp++ = '\0'; |
113 |
greg |
1.4 |
#ifdef DEBUG |
114 |
greg |
1.3 |
(*d->comout)(mybuf); /* echo my command */ |
115 |
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(*d->comout)("\n"); |
116 |
greg |
1.4 |
#endif |
117 |
greg |
1.3 |
/* send it as reply */ |
118 |
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strcpy(b, mybuf); |
119 |
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d->inpready--; |
120 |
greg |
2.3 |
/* advance commands */ |
121 |
greg |
2.9 |
cp1 = mybuf; |
122 |
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while ((*cp1++ = *cp++)) |
123 |
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; |
124 |
greg |
1.3 |
return(1); |
125 |
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} |