821 lines
15 KiB
C
821 lines
15 KiB
C
/* cmd1.c */
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/* Author:
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* Steve Kirkendall
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* 16820 SW Tallac Way
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* Beaverton, OR 97006
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* kirkenda@jove.cs.pdx.edu, or ...uunet!tektronix!psueea!jove!kirkenda
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*/
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/* This file contains some of the EX commands - mostly ones that deal with
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* files, options, etc. -- anything except text.
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*/
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#include <ctype.h>
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#include "vi.h"
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#include "regexp.h"
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#ifdef DEBUG
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/* print the selected lines with info on the blocks */
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void cmd_debug(frommark, tomark, cmd, bang, extra)
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MARK frommark;
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MARK tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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register char *scan;
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register long l;
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register int i;
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int len;
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/* scan lnum[] to determine which block its in */
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l = markline(frommark);
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for (i = 1; l > lnum[i]; i++)
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{
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}
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do
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{
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/* fetch text of the block containing that line */
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scan = blkget(i)->c;
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/* calculate its length */
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if (scan[BLKSIZE - 1])
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{
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len = BLKSIZE;
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}
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else
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{
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len = strlen(scan);
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}
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/* print block stats */
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wprintw(stdscr, "##### hdr[%d]=%d, lnum[%d-1]=%ld, lnum[%d]=%ld (%ld lines)\n",
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i, hdr.n[i], i, lnum[i-1], i, lnum[i], lnum[i] - lnum[i - 1]);
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wprintw(stdscr, "##### len=%d, buf=0x%lx, %sdirty\n",
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len, scan, ((int *)scan)[MAXBLKS + 1] ? "" : "not ");
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if (bang)
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{
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while (--len >= 0)
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{
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addch(*scan);
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scan++;
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}
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}
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exrefresh();
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/* next block */
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i++;
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} while (i < MAXBLKS && lnum[i] && lnum[i - 1] < markline(tomark));
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}
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/* This function checks a lot of conditions to make sure they aren't screwy */
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void cmd_validate(frommark, tomark, cmd, bang, extra)
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MARK frommark;
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MARK tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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char *scan;
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ushort i;
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int nlcnt; /* used to count newlines */
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int len; /* counts non-NUL characters */
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/* check lnum[0] */
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if (lnum[0] != 0L)
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{
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wprintw(stdscr, "lnum[0] = %ld\n", lnum[0]);
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}
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/* check each block */
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for (i = 1; lnum[i] <= nlines; i++)
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{
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scan = blkget(i)->c;
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if (scan[BLKSIZE - 1])
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{
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wprintw(stdscr, "block %d has no NUL at the end\n", i);
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}
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else
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{
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for (nlcnt = len = 0; *scan; scan++, len++)
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{
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if (*scan == '\n')
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{
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nlcnt++;
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}
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}
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if (scan[-1] != '\n')
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{
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wprintw(stdscr, "block %d doesn't end with '\\n' (length %d)\n", i, len);
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}
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if (bang || nlcnt != lnum[i] - lnum[i - 1])
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{
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wprintw(stdscr, "block %d (line %ld?) has %d lines, but should have %ld\n",
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i, lnum[i - 1] + 1L, nlcnt, lnum[i] - lnum[i - 1]);
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}
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}
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exrefresh();
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}
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/* check lnum again */
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if (lnum[i] != INFINITY)
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{
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wprintw(stdscr, "hdr.n[%d] = %d, but lnum[%d] = %ld\n",
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i, hdr.n[i], i, lnum[i]);
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}
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wprintw(stdscr, "# = \"%s\", %% = \"%s\"\n", prevorig, origname);
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}
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#endif /* DEBUG */
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void cmd_mark(frommark, tomark, cmd, bang, extra)
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MARK frommark;
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MARK tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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/* validate the name of the mark */
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if (!extra || *extra < 'a' || *extra > 'z' || extra[1])
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{
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msg("Invalid mark name");
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return;
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}
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mark[*extra - 'a'] = tomark;
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}
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void cmd_write(frommark, tomark, cmd, bang, extra)
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MARK frommark;
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MARK tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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int fd;
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register long l;
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register char *scan;
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register int i;
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/* if all lines are to be written, use tmpsave() */
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if (frommark == MARK_FIRST && tomark == MARK_LAST)
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{
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tmpsave(extra);
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return;
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}
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/* else do it line-by-line, like cmd_print() */
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fd = open((*extra == '>' ? extra + 2 : extra), 1);
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if (fd < 0)
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{
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fd = creat(extra, 0644);
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if (fd < 0)
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{
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msg("Can't write to \"%s\"", extra);
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return;
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}
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}
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else if (*extra == '>')
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{
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lseek(fd, 0L, 2);
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}
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for (l = markline(frommark); l <= markline(tomark); l++)
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{
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/* get the next line */
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scan = fetchline(l);
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i = strlen(scan);
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scan[i++] = '\n';
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/* print the line */
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write(fd, scan, i);
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}
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close(fd);
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}
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void cmd_shell(frommark, tomark, cmd, bang, extra)
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MARK frommark, tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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static char prevextra[80];
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/* special case: ":sh" means ":!sh" */
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if (cmd == CMD_SHELL)
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{
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extra = o_shell;
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frommark = tomark = 0L;
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}
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/* if extra is "!", substute previous command */
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if (*extra == '!')
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{
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if (!*prevextra)
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{
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addstr("No previous shell command to substitute for '!'\n");
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return;
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}
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extra = prevextra;
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}
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else
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{
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strcpy(prevextra, extra);
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}
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/* if no lines were specified, just run the command */
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suspend_curses();
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if (frommark == 0L)
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{
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system(extra);
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}
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else /* pipe lines from the file through the command */
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{
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filter(frommark, tomark, extra);
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}
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/* resume curses quietly for MODE_EX, but noisily otherwise */
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resume_curses(mode == MODE_EX);
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}
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void cmd_global(frommark, tomark, cmd, bang, extra)
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MARK frommark, tomark;
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CMD cmd;
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int bang;
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char *extra; /* rest of the command line */
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{
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char *cmdptr; /* the command from the command line */
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char cmdln[100]; /* copy of the command from the command line */
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char *line; /* a line from the file */
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long l; /* used as a counter to move through lines */
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long lqty; /* quantity of lines to be scanned */
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regexp *re; /* the compiled search expression */
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/* ":g! ..." is the same as ":v ..." */
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if (bang)
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{
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cmd = CMD_VGLOBAL;
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}
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/* make sure we got a search pattern */
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if (*extra != '/' && *extra != '?')
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{
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msg("Usage: %c /regular expression/ command", cmd == CMD_GLOBAL ? 'g' : 'v');
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return;
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}
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/* parse & compile the search pattern */
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cmdptr = parseptrn(extra);
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if (!extra[1])
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{
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msg("Can't use empty regular expression with '%c' command", cmd == CMD_GLOBAL ? 'g' : 'v');
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return;
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}
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re = regcomp(extra + 1);
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if (!re)
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{
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/* regcomp found & described an error */
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return;
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}
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/* for each line in the range */
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ChangeText
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{
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/* NOTE: we have to go through the lines in a forward order,
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* otherwise "g/re/p" would look funny. *BUT* for "g/re/d"
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* to work, simply adding 1 to the line# on each loop won't
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* work. The solution: count lines relative to the end of
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* the file. Think about it.
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*/
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for (l = nlines - markline(frommark), lqty = markline(tomark) - markline(frommark) + 1L;
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lqty > 0 && nlines - l >= 0;
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l--, lqty--)
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{
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/* fetch the line */
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line = fetchline(nlines - l);
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/* if it contains the search pattern... */
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if ((!regexec(re, line, 1)) == (cmd != CMD_GLOBAL))
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{
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/* move the cursor to that line */
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cursor = MARK_AT_LINE(nlines - l);
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/* do the ex command (without mucking up
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* the original copy of the command line)
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*/
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strcpy(cmdln, cmdptr);
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doexcmd(cmdln);
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}
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}
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}
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/* free the regexp */
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free(re);
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}
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void cmd_file(frommark, tomark, cmd, bang, extra)
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MARK frommark, tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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if (frommark == tomark)
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{
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msg( "\"%s\" %s%s %ld lines, this is line %ld [%ld%%]",
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*origname ? origname : "[NO FILE]",
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tstflag(file, MODIFIED) ? "[MODIFIED]" : "",
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tstflag(file, READONLY) ? "[READONLY]" : "",
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nlines,
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markline(frommark),
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markline(frommark) * 100 / nlines);
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}
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else
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{
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msg( "\"%s\" %s%s %ld lines, range %ld,%ld contains %ld lines",
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*origname ? origname : "[NO FILE]",
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tstflag(file, MODIFIED) ? "[MODIFIED]" : "",
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tstflag(file, READONLY) ? "[READONLY]" : "",
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nlines,
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markline(frommark), markline(tomark),
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markline(tomark) - markline(frommark) + 1L);
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}
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}
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void cmd_edit(frommark, tomark, cmd, bang, extra)
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MARK frommark, tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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long line = 1L; /* might be set to prevline */
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if (!strcmp(extra, prevorig))
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{
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line = prevline;
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}
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/* switch files */
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if (tmpabort(bang))
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{
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tmpstart(extra);
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if (line <= nlines && line >= 1L)
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{
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cursor = MARK_AT_LINE(line);
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}
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}
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else
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{
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addstr("Use edit! to abort changes, or w to save changes\n");
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/* so we can say ":e!" with no filename next time... */
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strcpy(prevorig, extra);
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prevline = 1L;
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}
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}
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void cmd_next(frommark, tomark, cmd, bang, extra)
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MARK frommark, tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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int i, j;
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char *scan;
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char *build;
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/* if extra stuff given, use ":args" to define a new args list */
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if (extra && *extra)
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{
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cmd_args(frommark, tomark, cmd, bang, extra);
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}
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/* move to the next arg */
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if (cmd == CMD_NEXT)
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{
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i = argno + 1;
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}
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else
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{
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i = argno - 1;
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}
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if (i < 0 || i >= nargs)
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{
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msg("No more files to edit");
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return;
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}
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/* find & isolate the name of the file to edit */
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for (j = i, scan = args; j > 0; j--)
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{
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while(!isspace(*scan))
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{
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scan++;
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}
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while(isspace(*scan))
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{
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scan++;
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}
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}
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for (build = tmpblk.c; *scan && !isspace(*scan); )
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{
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*build++ = *scan++;
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}
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*build = '\0';
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/* switch to the next file */
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if (tmpabort(bang))
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{
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tmpstart(tmpblk.c);
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argno = i;
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}
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else
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{
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addstr("Use next! to abort changes, or w to save changes\n");
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}
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}
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void cmd_xit(frommark, tomark, cmd, bang, extra)
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MARK frommark, tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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static long whenwarned; /* when the user was last warned of extra files */
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/* if there are more files to edit, then warn user */
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if (argno + 1 < nargs && whenwarned != changes)
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{
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msg("More files to edit -- Use \":n\" to go to next file");
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whenwarned = changes;
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return;
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}
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/* else try to save this file */
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if (tmpend(bang))
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{
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mode = MODE_QUIT;
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}
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else
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{
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msg("Could not save file -- use quit! to abort changes, or w filename");
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}
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}
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void cmd_args(frommark, tomark, cmd, bang, extra)
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MARK frommark, tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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char *scan;
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int i;
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int spc; /* boolean: was previous char a space? */
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/* if no extra names given, or just current name, then report the args
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* we have now.
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*/
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if (!extra || !*extra)
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{
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/* for each element of args... */
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for (scan = args, spc = TRUE, i = 0; *scan; )
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{
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/* bracket before the current arg */
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if (*scan != ' ' && *scan != '\t' && spc && i == argno)
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{
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qaddch('[');
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}
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qaddch(*scan);
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spc = (*scan == ' ' || *scan == '\t');
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scan++;
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/* bracket after current arg */
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if ((!*scan || *scan == ' ' || *scan == '\t') && !spc)
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{
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if (i == argno)
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{
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qaddch(']');
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}
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i++;
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}
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}
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/* write a trailing newline */
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addch('\n');
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exrefresh();
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}
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else /* new args list given */
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{
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strcpy(args, extra);
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argno = -1; /* before the first, so :next wil go to first */
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/* count the names */
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for (nargs = 0, scan = args; *scan; nargs++)
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{
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while (*scan && !isspace(*scan))
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{
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scan++;
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}
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while (isspace(*scan))
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{
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scan++;
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}
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}
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msg("%d files to edit", nargs);
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exrefresh();
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}
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}
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void cmd_cd(frommark, tomark, cmd, bang, extra)
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MARK frommark, tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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char *getenv();
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/* default directory name is $HOME */
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if (!*extra)
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{
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extra = getenv("HOME");
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if (!extra)
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{
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msg("environment variable $HOME not set");
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return;
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}
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}
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/* go to the directory */
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if (chdir(extra) < 0)
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{
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perror(extra);
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}
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}
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void cmd_map(frommark, tomark, cmd, bang, extra)
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MARK frommark, tomark;
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CMD cmd;
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int bang;
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char *extra;
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{
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char *mapto;
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/* "map" with no extra will dump the map table contents */
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if (!*extra)
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{
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dumpkey();
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}
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else
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{
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/* "extra" is key to map, followed my what it maps to */
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for (mapto = extra; *mapto && *mapto != ' ' && *mapto!= '\t'; mapto++)
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{
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}
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while (*mapto == ' ' || *mapto == '\t')
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{
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*mapto++ = '\0';
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}
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mapkey(extra, mapto, bang ? WHEN_VICMD|WHEN_VIINP|WHEN_EX : WHEN_VICMD, (char *)0);
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}
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}
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void cmd_set(frommark, tomark, cmd, bang, extra)
|
|
MARK frommark, tomark;
|
|
CMD cmd;
|
|
int bang;
|
|
char *extra;
|
|
{
|
|
if (!*extra)
|
|
{
|
|
dumpopts(FALSE);/* "FALSE" means "don't dump all" - only set */
|
|
}
|
|
else if (!strcmp(extra, "all"))
|
|
{
|
|
dumpopts(TRUE); /* "TRUE" means "dump all" - even unset vars */
|
|
}
|
|
else
|
|
{
|
|
setopts(extra);
|
|
}
|
|
}
|
|
|
|
|
|
void cmd_tag(frommark, tomark, cmd, bang, extra)
|
|
MARK frommark, tomark;
|
|
CMD cmd;
|
|
int bang;
|
|
char *extra;
|
|
{
|
|
char *scan; /* used to scan through the tmpblk.c */
|
|
char *cmp; /* char of tag name we're comparing, or NULL */
|
|
char *end; /* marks the end of chars in tmpblk.c */
|
|
int fd; /* file descriptor used to read the file */
|
|
char wasmagic; /* preserves the original state of o_magic */
|
|
|
|
/* open the tags file */
|
|
fd = open(TAGS, O_RDONLY);
|
|
if (fd < 0)
|
|
{
|
|
msg("No tags file");
|
|
return;
|
|
}
|
|
|
|
/* Hmmm... this would have been a lot easier with <stdio.h> */
|
|
|
|
/* find the line with our tag in it */
|
|
for(scan = end = tmpblk.c, cmp = extra; ; scan++)
|
|
{
|
|
/* read a block, if necessary */
|
|
if (scan >= end)
|
|
{
|
|
end = tmpblk.c + read(fd, tmpblk.c, BLKSIZE);
|
|
scan = tmpblk.c;
|
|
if (scan >= end)
|
|
{
|
|
msg("tag \"%s\" not found", extra);
|
|
close(fd);
|
|
return;
|
|
}
|
|
}
|
|
|
|
/* if we're comparing, compare... */
|
|
if (cmp)
|
|
{
|
|
/* matched??? wow! */
|
|
if (!*cmp && *scan == '\t')
|
|
{
|
|
break;
|
|
}
|
|
if (*cmp++ != *scan)
|
|
{
|
|
/* failed! skip to newline */
|
|
cmp = (char *)0;
|
|
}
|
|
}
|
|
|
|
/* if we're skipping to newline, do it fast! */
|
|
if (!cmp)
|
|
{
|
|
while (scan < end && *scan != '\n')
|
|
{
|
|
scan++;
|
|
}
|
|
if (scan < end)
|
|
{
|
|
cmp = extra;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* found it! get the rest of the line into memory */
|
|
for (cmp = tmpblk.c, scan++; scan < end && *scan != '\n'; )
|
|
{
|
|
*cmp++ = *scan++;
|
|
}
|
|
if (scan == end)
|
|
{
|
|
read(fd, cmp, BLKSIZE - (cmp - tmpblk.c));
|
|
}
|
|
|
|
/* we can close the tags file now */
|
|
close(fd);
|
|
|
|
/* extract the filename from the line, and edit the file */
|
|
for (cmp = tmpblk.c; *cmp != '\t'; cmp++)
|
|
{
|
|
}
|
|
*cmp++ = '\0';
|
|
if (strcmp(origname, tmpblk.c) != 0)
|
|
{
|
|
if (!tmpabort(bang))
|
|
{
|
|
addstr("Use tag! to abort changes, or w to save changes\n");
|
|
return;
|
|
}
|
|
tmpstart(tmpblk.c);
|
|
}
|
|
|
|
/* move to the desired line (or to line 1 if that fails) */
|
|
wasmagic = *o_magic;
|
|
*o_magic = FALSE;
|
|
linespec(cmp, &cursor);
|
|
if (cursor == MARK_UNSET)
|
|
{
|
|
cursor = MARK_FIRST;
|
|
}
|
|
*o_magic = wasmagic;
|
|
}
|
|
|
|
|
|
void cmd_visual(frommark, tomark, cmd, bang, extra)
|
|
MARK frommark, tomark;
|
|
CMD cmd;
|
|
int bang;
|
|
char *extra;
|
|
{
|
|
mode = MODE_VI;
|
|
}
|
|
|
|
void cmd_quit(frommark, tomark, cmd, bang, extra)
|
|
MARK frommark, tomark;
|
|
CMD cmd;
|
|
int bang;
|
|
char *extra;
|
|
{
|
|
if (tmpabort(bang))
|
|
{
|
|
mode = MODE_QUIT;
|
|
}
|
|
else
|
|
{
|
|
addstr("Use q! to abort changes, or wq to save changes\n");
|
|
}
|
|
}
|
|
|
|
|
|
void cmd_rewind(frommark, tomark, cmd, bang, extra)
|
|
MARK frommark, tomark;
|
|
CMD cmd;
|
|
int bang;
|
|
char *extra;
|
|
{
|
|
/* switch to the first file */
|
|
if (tmpabort(bang))
|
|
{
|
|
argno = -1;
|
|
cmd_next(frommark, tomark, CMD_NEXT, bang, extra);
|
|
}
|
|
else
|
|
{
|
|
addstr("Use rewind! to abort changes, or w to save changes\n");
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/* describe this version of the program */
|
|
void cmd_version(frommark, tomark, cmd, bang, extra)
|
|
MARK frommark;
|
|
MARK tomark;
|
|
CMD cmd;
|
|
int bang;
|
|
char *extra;
|
|
{
|
|
#ifndef DATE
|
|
addstr(VERSION);
|
|
addch('\n');
|
|
#else
|
|
wprintw(stdscr, "%s (%s)\n", VERSION, DATE);
|
|
#endif
|
|
#ifdef COPYING
|
|
addch('\n');
|
|
addstr(COPYING);
|
|
addch('\n');
|
|
#endif
|
|
}
|
|
|
|
|
|
/* make a .exrc file which describes the current configuration */
|
|
void cmd_mkexrc(frommark, tomark, cmd, bang, extra)
|
|
MARK frommark;
|
|
MARK tomark;
|
|
CMD cmd;
|
|
int bang;
|
|
char *extra;
|
|
{
|
|
int fd;
|
|
|
|
/* create the .exrc file */
|
|
fd = creat(EXRC, 0666);
|
|
if (fd < 0)
|
|
{
|
|
addstr("Couldn't create .exrc file\n");
|
|
return;
|
|
}
|
|
|
|
/* save stuff */
|
|
savekeys(fd);
|
|
saveopts(fd);
|
|
|
|
/* close the file */
|
|
close(fd);
|
|
addstr("Created new .exrc file\n");
|
|
}
|