X-Git-Url: https://pd.if.org/git/?p=pd_readline;a=blobdiff_plain;f=mg%2Ffile.c;fp=mg%2Ffile.c;h=0000000000000000000000000000000000000000;hp=acf64c1e4d2f114f565612e37f75723fa7108edc;hb=4bb27266f935c9aafad6870ffc8847fc65c8120f;hpb=3f771e17236364ded86e96ee64f99344337991f8 diff --git a/mg/file.c b/mg/file.c deleted file mode 100644 index acf64c1..0000000 --- a/mg/file.c +++ /dev/null @@ -1,715 +0,0 @@ -/* $OpenBSD: file.c,v 1.81 2012/06/18 09:19:21 lum Exp $ */ - -/* This file is in the public domain. */ - -/* - * File commands. - */ - -#include "def.h" - -#include - -#include - -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. 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 ((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) -{ - struct buffer *bp; - char fname[NFILEN], *bufp, *adjf; - int status; - - 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); - - status = killbuffer(curbp); - if (status == ABORT || status == FALSE) - return (ABORT); - - adjf = adjustname(fname, TRUE); - if (adjf == NULL) - return (FALSE); - 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 ((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); -} - -/* - * Given a file name, either find the buffer it uses, or create a new - * empty buffer to put it in. - */ -struct buffer * -findbuffer(char *fn) -{ - struct buffer *bp; - char bname[NBUFN], fname[NBUFN]; - - if (strlcpy(fname, fn, sizeof(fname)) >= sizeof(fname)) { - ewprintf("filename too long"); - return (NULL); - } - - for (bp = bheadp; bp != NULL; bp = bp->b_bufp) { - if (strcmp(bp->b_fname, fname) == 0) - return (bp); - } - /* Not found. Create a new one, adjusting name first */ - if (augbname(bname, fname, sizeof(bname)) == FALSE) - return (NULL); - - bp = bfind(bname, TRUE); - return (bp); -} - -/* - * 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; - int status, i, ro = FALSE; - PF *ael; - - /* 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) { - 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; - - /* - * We need to set the READONLY flag after we insert the file, - * unless the file is a directory. - */ - if (access(fname, W_OK) && errno != ENOENT) - ro = TRUE; - if (fisdir(fname) == TRUE) - 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) { - 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) { - 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: - 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) { - 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); - } - return (s); -} - -/* - * Save the contents of the current buffer back into its associated file. - */ -#ifndef MAKEBACKUP -#define MAKEBACKUP TRUE -#endif /* !MAKEBACKUP */ -static int makebackup = MAKEBACKUP; - -/* 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') { - 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); - } - 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) -{ - int s; - - /* open writes message */ - if ((s = ffwopen(ffp, fn, bp)) != FIOSUC) - return (FALSE); - s = ffputbuf(*ffp, bp); - 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); - 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)); -}