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9552e6b8 DF |
1 | /* |
2 | * Copyright (c) 1980 Regents of the University of California. | |
0c5f72fb KB |
3 | * All rights reserved. |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
acfc7e9b KB |
6 | * provided that the above copyright notice and this paragraph are |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
9552e6b8 DF |
16 | */ |
17 | ||
acfc7e9b | 18 | #ifndef lint |
470c33f3 | 19 | static char sccsid[] = "@(#)edit.c 5.10 (Berkeley) %G%"; |
acfc7e9b | 20 | #endif /* not lint */ |
de0c3def KS |
21 | |
22 | #include "rcv.h" | |
de0c3def KS |
23 | #include <sys/stat.h> |
24 | ||
25 | /* | |
26 | * Mail -- a mail program | |
27 | * | |
28 | * Perform message editing functions. | |
29 | */ | |
30 | ||
de0c3def KS |
31 | /* |
32 | * Edit a message list. | |
33 | */ | |
34 | ||
35 | editor(msgvec) | |
36 | int *msgvec; | |
37 | { | |
de0c3def | 38 | |
d33aa50d | 39 | return edit1(msgvec, 'e'); |
de0c3def KS |
40 | } |
41 | ||
42 | /* | |
43 | * Invoke the visual editor on a message list. | |
44 | */ | |
45 | ||
46 | visual(msgvec) | |
47 | int *msgvec; | |
48 | { | |
de0c3def | 49 | |
d33aa50d | 50 | return edit1(msgvec, 'v'); |
de0c3def KS |
51 | } |
52 | ||
53 | /* | |
54 | * Edit a message by writing the message into a funnily-named file | |
55 | * (which should not exist) and forking an editor on it. | |
56 | * We get the editor from the stuff above. | |
57 | */ | |
d33aa50d | 58 | edit1(msgvec, type) |
de0c3def | 59 | int *msgvec; |
d33aa50d | 60 | char type; |
de0c3def | 61 | { |
d33aa50d | 62 | int (*sigcont)() = signal(SIGCONT, SIG_DFL); |
de0c3def | 63 | register int c; |
d33aa50d | 64 | int i; |
064d7d97 | 65 | FILE *fp; |
064d7d97 | 66 | register struct message *mp; |
d33aa50d | 67 | off_t size; |
de0c3def | 68 | |
de0c3def KS |
69 | /* |
70 | * Deal with each message to be edited . . . | |
71 | */ | |
064d7d97 | 72 | for (i = 0; msgvec[i] && i < msgCount; i++) { |
d33aa50d | 73 | int (*sigint)(); |
d33aa50d EW |
74 | |
75 | if (i > 0) { | |
76 | char buf[100]; | |
77 | char *p; | |
78 | ||
470c33f3 | 79 | printf("Edit message %d [ynq]? ", msgvec[i]); |
d33aa50d EW |
80 | if (fgets(buf, sizeof buf, stdin) == 0) |
81 | break; | |
470c33f3 | 82 | for (p = buf; *p == ' ' || *p == '\t'; p++) |
d33aa50d EW |
83 | ; |
84 | if (*p == 'q') | |
85 | break; | |
86 | if (*p == 'n') | |
87 | continue; | |
de0c3def | 88 | } |
470c33f3 EW |
89 | dot = mp = &message[msgvec[i] - 1]; |
90 | touch(mp); | |
d33aa50d EW |
91 | sigint = signal(SIGINT, SIG_IGN); |
92 | fp = run_editor(setinput(mp), mp->m_size, type, readonly); | |
93 | if (fp != NULL) { | |
94 | (void) fseek(otf, (long) 0, 2); | |
95 | size = ftell(otf); | |
96 | mp->m_block = blockof(size); | |
97 | mp->m_offset = offsetof(size); | |
98 | mp->m_size = fsize(fp); | |
99 | mp->m_lines = 0; | |
100 | mp->m_flag |= MODIFY; | |
101 | rewind(fp); | |
102 | while ((c = getc(fp)) != EOF) { | |
103 | if (c == '\n') | |
104 | mp->m_lines++; | |
105 | if (putc(c, otf) == EOF) | |
106 | break; | |
107 | } | |
de0c3def | 108 | if (ferror(otf)) |
d33aa50d EW |
109 | perror("/tmp"); |
110 | (void) fclose(fp); | |
de0c3def | 111 | } |
d33aa50d EW |
112 | (void) signal(SIGINT, sigint); |
113 | } | |
114 | (void) signal(SIGCONT, sigcont); | |
115 | return 0; | |
116 | } | |
117 | ||
118 | /* | |
119 | * Run an editor on the file at "fpp" of "size" bytes, | |
120 | * and return a new file pointer. | |
121 | * Signals must be handled by the caller. | |
122 | * "Type" is 'e' for EDITOR, 'v' for VISUAL. | |
123 | */ | |
124 | FILE * | |
125 | run_editor(fp, size, type, readonly) | |
126 | register FILE *fp; | |
127 | off_t size; | |
128 | char type; | |
129 | { | |
130 | register FILE *nf = NULL; | |
131 | register int t; | |
132 | time_t modtime; | |
133 | char *edit; | |
134 | struct stat statb; | |
135 | extern char tempEdit[]; | |
136 | ||
137 | if ((t = creat(tempEdit, readonly ? 0400 : 0600)) < 0) { | |
138 | perror(tempEdit); | |
139 | goto out; | |
140 | } | |
141 | if ((nf = fdopen(t, "w")) == NULL) { | |
142 | perror(tempEdit); | |
143 | (void) unlink(tempEdit); | |
144 | goto out; | |
145 | } | |
146 | if (size >= 0) | |
147 | while (--size >= 0 && (t = getc(fp)) != EOF) | |
148 | (void) putc(t, nf); | |
149 | else | |
150 | while ((t = getc(fp)) != EOF) | |
151 | (void) putc(t, nf); | |
152 | (void) fflush(nf); | |
153 | if (fstat(fileno(nf), &statb) < 0) | |
154 | modtime = 0; | |
155 | else | |
156 | modtime = statb.st_mtime; | |
157 | if (ferror(nf) || fclose(nf) < 0) { | |
158 | perror(tempEdit); | |
159 | (void) unlink(tempEdit); | |
160 | nf = NULL; | |
161 | goto out; | |
162 | } | |
163 | nf = NULL; | |
164 | if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NOSTR) | |
165 | edit = type == 'e' ? EDITOR : VISUAL; | |
166 | if (run_command(edit, 0, -1, -1, tempEdit, NOSTR) < 0) { | |
167 | (void) unlink(tempEdit); | |
168 | goto out; | |
169 | } | |
170 | /* | |
171 | * If in read only mode or file unchanged, just remove the editor | |
172 | * temporary and return. | |
173 | */ | |
174 | if (readonly) { | |
175 | (void) unlink(tempEdit); | |
176 | goto out; | |
177 | } | |
178 | if (stat(tempEdit, &statb) < 0) { | |
179 | perror(tempEdit); | |
180 | goto out; | |
181 | } | |
182 | if (modtime == statb.st_mtime) { | |
183 | (void) unlink(tempEdit); | |
184 | goto out; | |
de0c3def | 185 | } |
de0c3def | 186 | /* |
d33aa50d | 187 | * Now switch to new file. |
de0c3def | 188 | */ |
d33aa50d EW |
189 | if ((nf = fopen(tempEdit, "a+")) == NULL) { |
190 | perror(tempEdit); | |
191 | (void) unlink(tempEdit); | |
192 | goto out; | |
193 | } | |
194 | (void) unlink(tempEdit); | |
de0c3def | 195 | out: |
d33aa50d | 196 | return nf; |
de0c3def | 197 | } |