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contrib/mg/file.c
- This file was added.
/* $OpenBSD: file.c,v 1.102 2019/06/22 15:03:43 lum Exp $ */ | |||||
/* This file is in the public domain. */ | |||||
/* | |||||
* File commands. | |||||
*/ | |||||
#include <sys/queue.h> | |||||
#include <sys/stat.h> | |||||
#include <errno.h> | |||||
#include <libgen.h> | |||||
#include <signal.h> | |||||
#include <stdio.h> | |||||
#include <stdlib.h> | |||||
#include <string.h> | |||||
#include <unistd.h> | |||||
#include "def.h" | |||||
size_t xdirname(char *, const char *, size_t); | |||||
/* | |||||
* Insert a file into the current buffer. Real easy - just call the | |||||
* insertfile routine with the file name. | |||||
*/ | |||||
/* ARGSUSED */ | |||||
int | |||||
fileinsert(int f, int n) | |||||
{ | |||||
char fname[NFILEN], *bufp, *adjf; | |||||
if (getbufcwd(fname, sizeof(fname)) != TRUE) | |||||
fname[0] = '\0'; | |||||
bufp = eread("Insert file: ", fname, NFILEN, | |||||
EFNEW | EFCR | EFFILE | EFDEF); | |||||
if (bufp == NULL) | |||||
return (ABORT); | |||||
else if (bufp[0] == '\0') | |||||
return (FALSE); | |||||
adjf = adjustname(bufp, TRUE); | |||||
if (adjf == NULL) | |||||
return (FALSE); | |||||
return (insertfile(adjf, NULL, FALSE)); | |||||
} | |||||
/* | |||||
* Select a file for editing. If the file is a directory, invoke dired. | |||||
* Otherwise, look around to see if you can find the file in another buffer; | |||||
* if you can find it, just switch to the buffer. If you cannot find the | |||||
* file, create a new buffer, read in the text, and switch to the new buffer. | |||||
*/ | |||||
/* ARGSUSED */ | |||||
int | |||||
filevisit(int f, int n) | |||||
{ | |||||
struct buffer *bp; | |||||
char fname[NFILEN], *bufp, *adjf; | |||||
int status; | |||||
if (getbufcwd(fname, sizeof(fname)) != TRUE) | |||||
fname[0] = '\0'; | |||||
bufp = eread("Find file: ", fname, NFILEN, | |||||
EFNEW | EFCR | EFFILE | EFDEF); | |||||
if (bufp == NULL) | |||||
return (ABORT); | |||||
else if (bufp[0] == '\0') | |||||
return (FALSE); | |||||
adjf = adjustname(fname, TRUE); | |||||
if (adjf == NULL) | |||||
return (FALSE); | |||||
if (fisdir(adjf) == TRUE) | |||||
return (do_dired(adjf)); | |||||
if ((bp = findbuffer(adjf)) == NULL) | |||||
return (FALSE); | |||||
curbp = bp; | |||||
if (showbuffer(bp, curwp, WFFULL) != TRUE) | |||||
return (FALSE); | |||||
if (bp->b_fname[0] == '\0') { | |||||
if ((status = readin(adjf)) != TRUE) | |||||
killbuffer(bp); | |||||
return (status); | |||||
} | |||||
return (TRUE); | |||||
} | |||||
/* | |||||
* Replace the current file with an alternate one. Semantics for finding | |||||
* the replacement file are the same as 'filevisit', except the current | |||||
* buffer is killed before the switch. If the kill fails, or is aborted, | |||||
* revert to the original file. | |||||
*/ | |||||
/* ARGSUSED */ | |||||
int | |||||
filevisitalt(int f, int n) | |||||
{ | |||||
char fname[NFILEN], *bufp; | |||||
if (getbufcwd(fname, sizeof(fname)) != TRUE) | |||||
fname[0] = '\0'; | |||||
bufp = eread("Find alternate file: ", fname, NFILEN, | |||||
EFNEW | EFCR | EFFILE | EFDEF); | |||||
if (bufp == NULL) | |||||
return (ABORT); | |||||
else if (bufp[0] == '\0') | |||||
return (FALSE); | |||||
return (do_filevisitalt(fname)); | |||||
} | |||||
int | |||||
do_filevisitalt(char *fn) | |||||
{ | |||||
struct buffer *bp; | |||||
int status; | |||||
char *adjf; | |||||
status = killbuffer(curbp); | |||||
if (status == ABORT || status == FALSE) | |||||
return (ABORT); | |||||
adjf = adjustname(fn, TRUE); | |||||
if (adjf == NULL) | |||||
return (FALSE); | |||||
if (fisdir(adjf) == TRUE) | |||||
return (do_dired(adjf)); | |||||
if ((bp = findbuffer(adjf)) == NULL) | |||||
return (FALSE); | |||||
curbp = bp; | |||||
if (showbuffer(bp, curwp, WFFULL) != TRUE) | |||||
return (FALSE); | |||||
if (bp->b_fname[0] == '\0') { | |||||
if ((status = readin(adjf)) != TRUE) | |||||
killbuffer(bp); | |||||
return (status); | |||||
} | |||||
return (TRUE); | |||||
} | |||||
int | |||||
filevisitro(int f, int n) | |||||
{ | |||||
int error; | |||||
error = filevisit(f, n); | |||||
if (error != TRUE) | |||||
return (error); | |||||
curbp->b_flag |= BFREADONLY; | |||||
return (TRUE); | |||||
} | |||||
/* | |||||
* Pop to a file in the other window. Same as the last function, but uses | |||||
* popbuf instead of showbuffer. | |||||
*/ | |||||
/* ARGSUSED */ | |||||
int | |||||
poptofile(int f, int n) | |||||
{ | |||||
struct buffer *bp; | |||||
struct mgwin *wp; | |||||
char fname[NFILEN], *adjf, *bufp; | |||||
int status; | |||||
if (getbufcwd(fname, sizeof(fname)) != TRUE) | |||||
fname[0] = '\0'; | |||||
if ((bufp = eread("Find file in other window: ", fname, NFILEN, | |||||
EFNEW | EFCR | EFFILE | EFDEF)) == NULL) | |||||
return (ABORT); | |||||
else if (bufp[0] == '\0') | |||||
return (FALSE); | |||||
adjf = adjustname(fname, TRUE); | |||||
if (adjf == NULL) | |||||
return (FALSE); | |||||
if (fisdir(adjf) == TRUE) | |||||
return (do_dired(adjf)); | |||||
if ((bp = findbuffer(adjf)) == NULL) | |||||
return (FALSE); | |||||
if (bp == curbp) | |||||
return (splitwind(f, n)); | |||||
if ((wp = popbuf(bp, WNONE)) == NULL) | |||||
return (FALSE); | |||||
curbp = bp; | |||||
curwp = wp; | |||||
if (bp->b_fname[0] == '\0') { | |||||
if ((status = readin(adjf)) != TRUE) | |||||
killbuffer(bp); | |||||
return (status); | |||||
} | |||||
return (TRUE); | |||||
} | |||||
/* | |||||
* Read the file "fname" into the current buffer. Make all of the text | |||||
* in the buffer go away, after checking for unsaved changes. This is | |||||
* called by the "read" command, the "visit" command, and the mainline | |||||
* (for "mg file"). | |||||
*/ | |||||
int | |||||
readin(char *fname) | |||||
{ | |||||
struct mgwin *wp; | |||||
struct stat statbuf; | |||||
int status, i, ro = FALSE; | |||||
PF *ael; | |||||
char dp[NFILEN]; | |||||
/* might be old */ | |||||
if (bclear(curbp) != TRUE) | |||||
return (TRUE); | |||||
/* Clear readonly. May be set by autoexec path */ | |||||
curbp->b_flag &= ~BFREADONLY; | |||||
if ((status = insertfile(fname, fname, TRUE)) != TRUE) { | |||||
dobeep(); | |||||
ewprintf("File is not readable: %s", fname); | |||||
return (FALSE); | |||||
} | |||||
for (wp = wheadp; wp != NULL; wp = wp->w_wndp) { | |||||
if (wp->w_bufp == curbp) { | |||||
wp->w_dotp = wp->w_linep = bfirstlp(curbp); | |||||
wp->w_doto = 0; | |||||
wp->w_markp = NULL; | |||||
wp->w_marko = 0; | |||||
} | |||||
} | |||||
/* | |||||
* Call auto-executing function if we need to. | |||||
*/ | |||||
if ((ael = find_autoexec(fname)) != NULL) { | |||||
for (i = 0; ael[i] != NULL; i++) | |||||
(*ael[i])(0, 1); | |||||
free(ael); | |||||
} | |||||
/* no change */ | |||||
curbp->b_flag &= ~BFCHG; | |||||
/* | |||||
* Set the buffer READONLY flag if any of following are true: | |||||
* 1. file is a directory. | |||||
* 2. file is read-only. | |||||
* 3. file doesn't exist and directory is read-only. | |||||
*/ | |||||
if (fisdir(fname) == TRUE) { | |||||
ro = TRUE; | |||||
} else if ((access(fname, W_OK) == -1)) { | |||||
if (errno != ENOENT) { | |||||
ro = TRUE; | |||||
} else if (errno == ENOENT) { | |||||
(void)xdirname(dp, fname, sizeof(dp)); | |||||
(void)strlcat(dp, "/", sizeof(dp)); | |||||
/* Missing directory; keep buffer rw, like emacs */ | |||||
if (stat(dp, &statbuf) == -1 && errno == ENOENT) { | |||||
if (eyorn("Missing directory, create") == TRUE) | |||||
(void)do_makedir(dp); | |||||
} else if (access(dp, W_OK) == -1 && errno == EACCES) { | |||||
ewprintf("File not found and directory" | |||||
" write-protected"); | |||||
ro = TRUE; | |||||
} | |||||
} | |||||
} | |||||
if (ro == TRUE) | |||||
curbp->b_flag |= BFREADONLY; | |||||
if (startrow) { | |||||
gotoline(FFARG, startrow); | |||||
startrow = 0; | |||||
} | |||||
undo_add_modified(); | |||||
return (status); | |||||
} | |||||
/* | |||||
* NB, getting file attributes is done here under control of a flag | |||||
* rather than in readin, which would be cleaner. I was concerned | |||||
* that some operating system might require the file to be open | |||||
* in order to get the information. Similarly for writing. | |||||
*/ | |||||
/* | |||||
* Insert a file in the current buffer, after dot. If file is a directory, | |||||
* and 'replacebuf' is TRUE, invoke dired mode, else die with an error. | |||||
* If file is a regular file, set mark at the end of the text inserted; | |||||
* point at the beginning. Return a standard status. Print a summary | |||||
* (lines read, error message) out as well. This routine also does the | |||||
* read end of backup processing. The BFBAK flag, if set in a buffer, | |||||
* says that a backup should be taken. It is set when a file is read in, | |||||
* but not on a new file. You don't need to make a backup copy of nothing. | |||||
*/ | |||||
static char *line = NULL; | |||||
static int linesize = 0; | |||||
int | |||||
insertfile(char *fname, char *newname, int replacebuf) | |||||
{ | |||||
struct buffer *bp; | |||||
struct line *lp1, *lp2; | |||||
struct line *olp; /* line we started at */ | |||||
struct mgwin *wp; | |||||
int nbytes, s, nline = 0, siz, x, x2; | |||||
int opos; /* offset we started at */ | |||||
int oline; /* original line number */ | |||||
FILE *ffp; | |||||
if (replacebuf == TRUE) | |||||
x = undo_enable(FFRAND, 0); | |||||
else | |||||
x = undo_enabled(); | |||||
lp1 = NULL; | |||||
if (line == NULL) { | |||||
line = malloc(NLINE); | |||||
if (line == NULL) | |||||
panic("out of memory"); | |||||
linesize = NLINE; | |||||
} | |||||
/* cheap */ | |||||
bp = curbp; | |||||
if (newname != NULL) { | |||||
(void)strlcpy(bp->b_fname, newname, sizeof(bp->b_fname)); | |||||
(void)xdirname(bp->b_cwd, newname, sizeof(bp->b_cwd)); | |||||
(void)strlcat(bp->b_cwd, "/", sizeof(bp->b_cwd)); | |||||
} | |||||
/* hard file open */ | |||||
if ((s = ffropen(&ffp, fname, (replacebuf == TRUE) ? bp : NULL)) | |||||
== FIOERR) | |||||
goto out; | |||||
if (s == FIOFNF) { | |||||
/* file not found */ | |||||
if (newname != NULL) | |||||
ewprintf("(New file)"); | |||||
else | |||||
ewprintf("(File not found)"); | |||||
goto out; | |||||
} else if (s == FIODIR) { | |||||
/* file was a directory */ | |||||
if (replacebuf == FALSE) { | |||||
dobeep(); | |||||
ewprintf("Cannot insert: file is a directory, %s", | |||||
fname); | |||||
goto cleanup; | |||||
} | |||||
killbuffer(bp); | |||||
bp = dired_(fname); | |||||
undo_enable(FFRAND, x); | |||||
if (bp == NULL) | |||||
return (FALSE); | |||||
curbp = bp; | |||||
return (showbuffer(bp, curwp, WFFULL | WFMODE)); | |||||
} else { | |||||
(void)xdirname(bp->b_cwd, fname, sizeof(bp->b_cwd)); | |||||
(void)strlcat(bp->b_cwd, "/", sizeof(bp->b_cwd)); | |||||
} | |||||
opos = curwp->w_doto; | |||||
oline = curwp->w_dotline; | |||||
/* | |||||
* Open a new line at dot and start inserting after it. | |||||
* We will delete this newline after insertion. | |||||
* Disable undo, as we create the undo record manually. | |||||
*/ | |||||
x2 = undo_enable(FFRAND, 0); | |||||
(void)lnewline(); | |||||
olp = lback(curwp->w_dotp); | |||||
undo_enable(FFRAND, x2); | |||||
nline = 0; | |||||
siz = 0; | |||||
while ((s = ffgetline(ffp, line, linesize, &nbytes)) != FIOERR) { | |||||
retry: | |||||
siz += nbytes + 1; | |||||
switch (s) { | |||||
case FIOSUC: | |||||
/* FALLTHRU */ | |||||
case FIOEOF: | |||||
++nline; | |||||
if ((lp1 = lalloc(nbytes)) == NULL) { | |||||
/* keep message on the display */ | |||||
s = FIOERR; | |||||
undo_add_insert(olp, opos, | |||||
siz - nbytes - 1 - 1); | |||||
goto endoffile; | |||||
} | |||||
bcopy(line, <ext(lp1)[0], nbytes); | |||||
lp2 = lback(curwp->w_dotp); | |||||
lp2->l_fp = lp1; | |||||
lp1->l_fp = curwp->w_dotp; | |||||
lp1->l_bp = lp2; | |||||
curwp->w_dotp->l_bp = lp1; | |||||
if (s == FIOEOF) { | |||||
undo_add_insert(olp, opos, siz - 1); | |||||
goto endoffile; | |||||
} | |||||
break; | |||||
case FIOLONG: { | |||||
/* a line too long to fit in our buffer */ | |||||
char *cp; | |||||
int newsize; | |||||
newsize = linesize * 2; | |||||
if (newsize < 0 || | |||||
(cp = malloc(newsize)) == NULL) { | |||||
dobeep(); | |||||
ewprintf("Could not allocate %d bytes", | |||||
newsize); | |||||
s = FIOERR; | |||||
goto endoffile; | |||||
} | |||||
bcopy(line, cp, linesize); | |||||
free(line); | |||||
line = cp; | |||||
s = ffgetline(ffp, line + linesize, linesize, | |||||
&nbytes); | |||||
nbytes += linesize; | |||||
linesize = newsize; | |||||
if (s == FIOERR) | |||||
goto endoffile; | |||||
goto retry; | |||||
} | |||||
default: | |||||
dobeep(); | |||||
ewprintf("Unknown code %d reading file", s); | |||||
s = FIOERR; | |||||
break; | |||||
} | |||||
} | |||||
endoffile: | |||||
/* ignore errors */ | |||||
(void)ffclose(ffp, NULL); | |||||
/* don't zap an error */ | |||||
if (s == FIOEOF) { | |||||
if (nline == 1) | |||||
ewprintf("(Read 1 line)"); | |||||
else | |||||
ewprintf("(Read %d lines)", nline); | |||||
} | |||||
/* set mark at the end of the text */ | |||||
curwp->w_dotp = curwp->w_markp = lback(curwp->w_dotp); | |||||
curwp->w_marko = llength(curwp->w_markp); | |||||
curwp->w_markline = oline + nline + 1; | |||||
/* | |||||
* if we are at the end of the file, ldelnewline is a no-op, | |||||
* but we still need to decrement the line and markline counts | |||||
* as we've accounted for this fencepost in our arithmetic | |||||
*/ | |||||
if (lforw(curwp->w_dotp) == curwp->w_bufp->b_headp) { | |||||
curwp->w_bufp->b_lines--; | |||||
curwp->w_markline--; | |||||
} else | |||||
(void)ldelnewline(); | |||||
curwp->w_dotp = olp; | |||||
curwp->w_doto = opos; | |||||
curwp->w_dotline = oline; | |||||
if (olp == curbp->b_headp) | |||||
curwp->w_dotp = lforw(olp); | |||||
if (newname != NULL) | |||||
bp->b_flag |= BFCHG | BFBAK; /* Need a backup. */ | |||||
else | |||||
bp->b_flag |= BFCHG; | |||||
/* | |||||
* If the insert was at the end of buffer, set lp1 to the end of | |||||
* buffer line, and lp2 to the beginning of the newly inserted text. | |||||
* (Otherwise lp2 is set to NULL.) This is used below to set | |||||
* pointers in other windows correctly if they are also at the end of | |||||
* buffer. | |||||
*/ | |||||
lp1 = bp->b_headp; | |||||
if (curwp->w_markp == lp1) { | |||||
lp2 = curwp->w_dotp; | |||||
} else { | |||||
/* delete extraneous newline */ | |||||
(void)ldelnewline(); | |||||
out: lp2 = NULL; | |||||
} | |||||
for (wp = wheadp; wp != NULL; wp = wp->w_wndp) { | |||||
if (wp->w_bufp == curbp) { | |||||
wp->w_rflag |= WFMODE | WFEDIT; | |||||
if (wp != curwp && lp2 != NULL) { | |||||
if (wp->w_dotp == lp1) | |||||
wp->w_dotp = lp2; | |||||
if (wp->w_markp == lp1) | |||||
wp->w_markp = lp2; | |||||
if (wp->w_linep == lp1) | |||||
wp->w_linep = lp2; | |||||
} | |||||
} | |||||
} | |||||
bp->b_lines += nline; | |||||
cleanup: | |||||
undo_enable(FFRAND, x); | |||||
/* return FALSE if error */ | |||||
return (s != FIOERR); | |||||
} | |||||
/* | |||||
* Ask for a file name and write the contents of the current buffer to that | |||||
* file. Update the remembered file name and clear the buffer changed flag. | |||||
* This handling of file names is different from the earlier versions and | |||||
* is more compatible with Gosling EMACS than with ITS EMACS. | |||||
*/ | |||||
/* ARGSUSED */ | |||||
int | |||||
filewrite(int f, int n) | |||||
{ | |||||
struct stat statbuf; | |||||
int s; | |||||
char fname[NFILEN], bn[NBUFN], tmp[NFILEN + 25]; | |||||
char *adjfname, *bufp; | |||||
FILE *ffp; | |||||
if (getbufcwd(fname, sizeof(fname)) != TRUE) | |||||
fname[0] = '\0'; | |||||
if ((bufp = eread("Write file: ", fname, NFILEN, | |||||
EFDEF | EFNEW | EFCR | EFFILE)) == NULL) | |||||
return (ABORT); | |||||
else if (bufp[0] == '\0') | |||||
return (FALSE); | |||||
adjfname = adjustname(fname, TRUE); | |||||
if (adjfname == NULL) | |||||
return (FALSE); | |||||
/* Check if file exists; write checks done later */ | |||||
if (stat(adjfname, &statbuf) == 0) { | |||||
if (S_ISDIR(statbuf.st_mode)) { | |||||
dobeep(); | |||||
ewprintf("%s is a directory", adjfname); | |||||
return (FALSE); | |||||
} | |||||
snprintf(tmp, sizeof(tmp), "File `%s' exists; overwrite", | |||||
adjfname); | |||||
if ((s = eyorn(tmp)) != TRUE) | |||||
return (s); | |||||
} | |||||
/* old attributes are no longer current */ | |||||
bzero(&curbp->b_fi, sizeof(curbp->b_fi)); | |||||
if ((s = writeout(&ffp, curbp, adjfname)) == TRUE) { | |||||
(void)strlcpy(curbp->b_fname, adjfname, sizeof(curbp->b_fname)); | |||||
if (getbufcwd(curbp->b_cwd, sizeof(curbp->b_cwd)) != TRUE) | |||||
(void)strlcpy(curbp->b_cwd, "/", sizeof(curbp->b_cwd)); | |||||
if (augbname(bn, curbp->b_fname, sizeof(bn)) | |||||
== FALSE) | |||||
return (FALSE); | |||||
free(curbp->b_bname); | |||||
if ((curbp->b_bname = strdup(bn)) == NULL) | |||||
return (FALSE); | |||||
(void)fupdstat(curbp); | |||||
curbp->b_flag &= ~(BFBAK | BFCHG); | |||||
upmodes(curbp); | |||||
undo_add_boundary(FFRAND, 1); | |||||
undo_add_modified(); | |||||
} | |||||
return (s); | |||||
} | |||||
/* | |||||
* Save the contents of the current buffer back into its associated file. | |||||
*/ | |||||
static int makebackup = TRUE; | |||||
/* ARGSUSED */ | |||||
int | |||||
filesave(int f, int n) | |||||
{ | |||||
if (curbp->b_fname[0] == '\0') | |||||
return (filewrite(f, n)); | |||||
else | |||||
return (buffsave(curbp)); | |||||
} | |||||
/* | |||||
* Save the contents of the buffer argument into its associated file. Do | |||||
* nothing if there have been no changes (is this a bug, or a feature?). | |||||
* Error if there is no remembered file name. If this is the first write | |||||
* since the read or visit, then a backup copy of the file is made. | |||||
* Allow user to select whether or not to make backup files by looking at | |||||
* the value of makebackup. | |||||
*/ | |||||
int | |||||
buffsave(struct buffer *bp) | |||||
{ | |||||
int s; | |||||
FILE *ffp; | |||||
/* return, no changes */ | |||||
if ((bp->b_flag & BFCHG) == 0) { | |||||
ewprintf("(No changes need to be saved)"); | |||||
return (TRUE); | |||||
} | |||||
/* must have a name */ | |||||
if (bp->b_fname[0] == '\0') { | |||||
dobeep(); | |||||
ewprintf("No file name"); | |||||
return (FALSE); | |||||
} | |||||
/* Ensure file has not been modified elsewhere */ | |||||
/* We don't use the ignore flag here */ | |||||
if (fchecktime(bp) != TRUE) { | |||||
if ((s = eyesno("File has changed on disk since last save. " | |||||
"Save anyway")) != TRUE) | |||||
return (s); | |||||
} | |||||
if (makebackup && (bp->b_flag & BFBAK)) { | |||||
s = fbackupfile(bp->b_fname); | |||||
/* hard error */ | |||||
if (s == ABORT) | |||||
return (FALSE); | |||||
/* softer error */ | |||||
if (s == FALSE && | |||||
(s = eyesno("Backup error, save anyway")) != TRUE) | |||||
return (s); | |||||
} | |||||
if ((s = writeout(&ffp, bp, bp->b_fname)) == TRUE) { | |||||
(void)fupdstat(bp); | |||||
bp->b_flag &= ~(BFCHG | BFBAK); | |||||
upmodes(bp); | |||||
undo_add_boundary(FFRAND, 1); | |||||
undo_add_modified(); | |||||
} | |||||
return (s); | |||||
} | |||||
/* | |||||
* Since we don't have variables (we probably should) this is a command | |||||
* processor for changing the value of the make backup flag. If no argument | |||||
* is given, sets makebackup to true, so backups are made. If an argument is | |||||
* given, no backup files are made when saving a new version of a file. | |||||
*/ | |||||
/* ARGSUSED */ | |||||
int | |||||
makebkfile(int f, int n) | |||||
{ | |||||
if (f & FFARG) | |||||
makebackup = n > 0; | |||||
else | |||||
makebackup = !makebackup; | |||||
ewprintf("Backup files %sabled", makebackup ? "en" : "dis"); | |||||
return (TRUE); | |||||
} | |||||
/* | |||||
* NB: bp is passed to both ffwopen and ffclose because some | |||||
* attribute information may need to be updated at open time | |||||
* and others after the close. This is OS-dependent. Note | |||||
* that the ff routines are assumed to be able to tell whether | |||||
* the attribute information has been set up in this buffer | |||||
* or not. | |||||
*/ | |||||
/* | |||||
* This function performs the details of file writing; writing the file | |||||
* in buffer bp to file fn. Uses the file management routines in the | |||||
* "fileio.c" package. Most of the grief is checking of some sort. | |||||
* You may want to call fupdstat() after using this function. | |||||
*/ | |||||
int | |||||
writeout(FILE ** ffp, struct buffer *bp, char *fn) | |||||
{ | |||||
struct stat statbuf; | |||||
struct line *lpend; | |||||
int s, eobnl; | |||||
char dp[NFILEN]; | |||||
if (stat(fn, &statbuf) == -1 && errno == ENOENT) { | |||||
errno = 0; | |||||
(void)xdirname(dp, fn, sizeof(dp)); | |||||
(void)strlcat(dp, "/", sizeof(dp)); | |||||
if (access(dp, W_OK) && errno == EACCES) { | |||||
dobeep(); | |||||
ewprintf("Directory %s write-protected", dp); | |||||
return (FIOERR); | |||||
} else if (errno == ENOENT) { | |||||
dobeep(); | |||||
ewprintf("%s: no such directory", dp); | |||||
return (FIOERR); | |||||
} | |||||
} | |||||
lpend = bp->b_headp; | |||||
eobnl = 0; | |||||
if (llength(lback(lpend)) != 0) { | |||||
eobnl = eyorn("No newline at end of file, add one"); | |||||
if (eobnl != TRUE && eobnl != FALSE) | |||||
return (eobnl); /* abort */ | |||||
} | |||||
/* open writes message */ | |||||
if ((s = ffwopen(ffp, fn, bp)) != FIOSUC) | |||||
return (FALSE); | |||||
s = ffputbuf(*ffp, bp, eobnl); | |||||
if (s == FIOSUC) { | |||||
/* no write error */ | |||||
s = ffclose(*ffp, bp); | |||||
if (s == FIOSUC) | |||||
ewprintf("Wrote %s", fn); | |||||
} else { | |||||
/* print a message indicating write error */ | |||||
(void)ffclose(*ffp, bp); | |||||
dobeep(); | |||||
ewprintf("Unable to write %s", fn); | |||||
} | |||||
return (s == FIOSUC); | |||||
} | |||||
/* | |||||
* Tag all windows for bp (all windows if bp == NULL) as needing their | |||||
* mode line updated. | |||||
*/ | |||||
void | |||||
upmodes(struct buffer *bp) | |||||
{ | |||||
struct mgwin *wp; | |||||
for (wp = wheadp; wp != NULL; wp = wp->w_wndp) | |||||
if (bp == NULL || curwp->w_bufp == bp) | |||||
wp->w_rflag |= WFMODE; | |||||
} | |||||
/* | |||||
* dirname using strlcpy semantic. | |||||
* Like dirname() except an empty string is returned in | |||||
* place of "/". This means we can always add a trailing | |||||
* slash and be correct. | |||||
* Address portability issues by copying argument | |||||
* before using. Some implementations modify the input string. | |||||
*/ | |||||
size_t | |||||
xdirname(char *dp, const char *path, size_t dplen) | |||||
{ | |||||
char ts[NFILEN]; | |||||
size_t len; | |||||
(void)strlcpy(ts, path, NFILEN); | |||||
len = strlcpy(dp, dirname(ts), dplen); | |||||
if (dplen > 0 && dp[0] == '/' && dp[1] == '\0') { | |||||
dp[0] = '\0'; | |||||
len = 0; | |||||
} | |||||
return (len); | |||||
} | |||||
/* | |||||
* basename using strlcpy/strlcat semantic. | |||||
* Address portability issue by copying argument | |||||
* before using: some implementations modify the input string. | |||||
*/ | |||||
size_t | |||||
xbasename(char *bp, const char *path, size_t bplen) | |||||
{ | |||||
char ts[NFILEN]; | |||||
(void)strlcpy(ts, path, NFILEN); | |||||
return (strlcpy(bp, basename(ts), bplen)); | |||||
} | |||||
/* | |||||
* The adjusted file name refers to a directory, so open dired mode. | |||||
*/ | |||||
int | |||||
do_dired(char *adjf) | |||||
{ | |||||
struct buffer *bp; | |||||
if ((bp = dired_(adjf)) == FALSE) | |||||
return (FALSE); | |||||
curbp = bp; | |||||
return (showbuffer(bp, curwp, WFFULL | WFMODE)); | |||||
} |