diff options
Diffstat (limited to 'usr.bin/mail/edit.c')
| -rw-r--r-- | usr.bin/mail/edit.c | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/usr.bin/mail/edit.c b/usr.bin/mail/edit.c new file mode 100644 index 0000000..97d3bd4 --- /dev/null +++ b/usr.bin/mail/edit.c @@ -0,0 +1,220 @@ +/* + * Copyright (c) 1980, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)edit.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include "rcv.h" +#include <fcntl.h> +#include "extern.h" + +/* + * Mail -- a mail program + * + * Perform message editing functions. + */ + +/* + * Edit a message list. + */ +int +editor(msgvec) + int *msgvec; +{ + + return edit1(msgvec, 'e'); +} + +/* + * Invoke the visual editor on a message list. + */ +int +visual(msgvec) + int *msgvec; +{ + + return edit1(msgvec, 'v'); +} + +/* + * Edit a message by writing the message into a funnily-named file + * (which should not exist) and forking an editor on it. + * We get the editor from the stuff above. + */ +int +edit1(msgvec, type) + int *msgvec; + int type; +{ + register int c; + int i; + FILE *fp; + register struct message *mp; + off_t size; + + /* + * Deal with each message to be edited . . . + */ + for (i = 0; msgvec[i] && i < msgCount; i++) { + sig_t sigint; + + if (i > 0) { + char buf[100]; + char *p; + + printf("Edit message %d [ynq]? ", msgvec[i]); + if (fgets(buf, sizeof buf, stdin) == 0) + break; + for (p = buf; *p == ' ' || *p == '\t'; p++) + ; + if (*p == 'q') + break; + if (*p == 'n') + continue; + } + dot = mp = &message[msgvec[i] - 1]; + touch(mp); + sigint = signal(SIGINT, SIG_IGN); + fp = run_editor(setinput(mp), mp->m_size, type, readonly); + if (fp != NULL) { + (void) fseek(otf, 0L, 2); + size = ftell(otf); + mp->m_block = blockof(size); + mp->m_offset = offsetof(size); + mp->m_size = fsize(fp); + mp->m_lines = 0; + mp->m_flag |= MODIFY; + rewind(fp); + while ((c = getc(fp)) != EOF) { + if (c == '\n') + mp->m_lines++; + if (putc(c, otf) == EOF) + break; + } + if (ferror(otf)) + perror("/tmp"); + (void) Fclose(fp); + } + (void) signal(SIGINT, sigint); + } + return 0; +} + +/* + * Run an editor on the file at "fpp" of "size" bytes, + * and return a new file pointer. + * Signals must be handled by the caller. + * "Type" is 'e' for _PATH_EX, 'v' for _PATH_VI. + */ +FILE * +run_editor(fp, size, type, readonly) + register FILE *fp; + off_t size; + int type, readonly; +{ + register FILE *nf = NULL; + register int t; + time_t modtime; + char *edit; + struct stat statb; + extern char tempEdit[]; + + if ((t = creat(tempEdit, readonly ? 0400 : 0600)) < 0) { + perror(tempEdit); + goto out; + } + if ((nf = Fdopen(t, "w")) == NULL) { + perror(tempEdit); + (void) unlink(tempEdit); + goto out; + } + if (size >= 0) + while (--size >= 0 && (t = getc(fp)) != EOF) + (void) putc(t, nf); + else + while ((t = getc(fp)) != EOF) + (void) putc(t, nf); + (void) fflush(nf); + if (fstat(fileno(nf), &statb) < 0) + modtime = 0; + else + modtime = statb.st_mtime; + if (ferror(nf)) { + (void) Fclose(nf); + perror(tempEdit); + (void) unlink(tempEdit); + nf = NULL; + goto out; + } + if (Fclose(nf) < 0) { + perror(tempEdit); + (void) unlink(tempEdit); + nf = NULL; + goto out; + } + nf = NULL; + if ((edit = value(type == 'e' ? "EDITOR" : "VISUAL")) == NOSTR) + edit = type == 'e' ? _PATH_EX : _PATH_VI; + if (run_command(edit, 0, -1, -1, tempEdit, NOSTR, NOSTR) < 0) { + (void) unlink(tempEdit); + goto out; + } + /* + * If in read only mode or file unchanged, just remove the editor + * temporary and return. + */ + if (readonly) { + (void) unlink(tempEdit); + goto out; + } + if (stat(tempEdit, &statb) < 0) { + perror(tempEdit); + goto out; + } + if (modtime == statb.st_mtime) { + (void) unlink(tempEdit); + goto out; + } + /* + * Now switch to new file. + */ + if ((nf = Fopen(tempEdit, "a+")) == NULL) { + perror(tempEdit); + (void) unlink(tempEdit); + goto out; + } + (void) unlink(tempEdit); +out: + return nf; +} |
