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https://github.com/GnoConsortium/gno.git
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784e3de7cd
passwd, ps, purge, shutdown, stty, upper, and vi. These sources are for the versions of the utils shipped with GNO v2.0.4.
382 lines
8.4 KiB
C
382 lines
8.4 KiB
C
/*
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* STEVIE - Simply Try this Editor for VI Enthusiasts
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*
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*
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* Code Contributions By : Jawaid Bayzar bazyar@cs.uiuc.edu
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* Tim Thompson twitch!tjt
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* Tony Andrews onecom!wldrdg!tony
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* G. R. (Fred) Walter watmath!grwalter
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*/
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#include "stevie.h"
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segment "s_io";
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#ifdef GSOS
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#include <gsos.h>
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#include <signal.h>
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#include <gno/gno.h>
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#include <fcntl.h>
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FileInfoRecGS finfo = {4, 0l, 0xC3, 0xB0, 0l};
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#endif
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void
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filemess(char *s)
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{
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sprintf(IObuff, "\"%s\" %s", ((Filename == NULL) ? "" : Filename), s);
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msg(IObuff);
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}
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void
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renum(void)
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{
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LPtr *p;
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unsigned long l = 0;
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for (p = Filemem; p != NULL; p = nextline(p), l += LINEINC)
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p->linep->num = l;
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Fileend->linep->num = 0xffffffffL;
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}
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#ifdef MEGAMAX
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overlay "fileio"
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#endif
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#ifdef GSOS
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#define BUFSIZE1 4096
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char *savebuf;
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int outind;
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int fd;
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void flushout()
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{
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write(fd,savebuf,outind);
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outind = 0;
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}
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#endif
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/* made a bunch of these things unsigned for speed- 816 be dumb */
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bool_t
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readfile(char *fname, LPtr *fromp, bool_t nochangename)
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/*char *fname;
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LPtr *fromp;
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bool_t nochangename; /* if TRUE, don't change the Filename */
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{
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FILE *f, *fopen();
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LINE *curr;
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char buf2[80];
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int c,hitEOF = 0;
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unsigned short IObuffsize = 0;
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unsigned long nchars = 0;
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unsigned int linecnt = 0;
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bool_t wasempty = bufempty();
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unsigned nonascii = 0; /* count garbage characters */
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unsigned nulls = 0; /* count nulls */
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bool_t incomplete = FALSE; /* was the last line incomplete? */
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bool_t toolong = FALSE; /* a line was too long */
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char *saveb1,*locIObuff;
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unsigned inind,insize;
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curr = fromp->linep;
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locIObuff = IObuff;
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if (!nochangename)
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Filename = strsave(fname);
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f = fopen(fname, "r");
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if (f == NULL) {
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s_refresh(NOT_VALID);
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filemess("");
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return TRUE;
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}
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#ifdef GSOS
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{
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GSString255Ptr fn;
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fn = malloc(strlen(fname)+2);
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fn->length = strlen(fname);
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strncpy(fn->text,fname,fn->length);
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finfo.pCount = 4;
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finfo.pathname = fn;
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GetFileInfoGS(&finfo);
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free(fn);
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}
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#endif
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S_NOT_VALID;
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#ifdef GSOS
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savebuf = malloc(BUFSIZE1+1);
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saveb1 = savebuf;
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insize = inind = 0;
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#endif
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do {
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if (inind == insize) {
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insize = read(fileno(f), savebuf, BUFSIZE1);
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if (!insize) hitEOF = 1;
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inind = 0;
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}
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/*c = getc(f);*/
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c = saveb1[inind++];
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if (c == '\r') c = NL;
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if (hitEOF) {
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if (IObuffsize == 0)/* normal loop termination */
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break;
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/*
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* If we get EOF in the middle of a line, note the fact and
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* complete the line ourselves.
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*/
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incomplete = TRUE;
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c = NL;
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}
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if (c & 0x80) { /* much faster check for hi bit set */
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c &= 0x7f; /* this is faster, jesus */
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nonascii++;
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}
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/*
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* If we reached the end of the line, OR we ran out of space for it,
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* then process the complete line.
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*/
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if (c == NL || IObuffsize == (IOSIZE - 1)) {
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LINE *lp;
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if (c != NL)
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toolong = TRUE;
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locIObuff[IObuffsize++] = NUL;
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lp = newline(IObuffsize);
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if (lp == NULL) {
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fprintf(stderr, "not enough memory - should never happen");
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getout(1);
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}
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strcpy(lp->s, locIObuff);
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curr->next->prev = lp; /* new line to next one */
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lp->next = curr->next;
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curr->next = lp; /* new line to prior one */
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lp->prev = curr;
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curr = lp; /* new line becomes current */
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IObuffsize = 0;
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linecnt++;
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} else if (c == NUL) {
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nulls++; /* count and ignore nulls */
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} else {
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locIObuff[IObuffsize++] = (char) c; /* normal character */
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}
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nchars++;
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} while (!incomplete && !toolong);
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free(savebuf);
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fclose(f);
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/*
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* If the buffer was empty when we started, we have to go back and remove
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* the "dummy" line at Filemem and patch up the ptrs.
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*/
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if (wasempty && linecnt != 0) {
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LINE *dummy = Filemem->linep; /* dummy line ptr */
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Filemem->linep = Filemem->linep->next;
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Filemem->linep->prev = Filetop->linep;
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Filetop->linep->next = Filemem->linep;
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Curschar->linep = Filemem->linep;
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Topchar->linep = Filemem->linep;
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free(dummy->s); /* free string space */
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free((char *) dummy); /* free LINE struct */
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}
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renum();
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if (toolong) {
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s_refresh(NOT_VALID);
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sprintf(IObuff, "\"%s\" Line too long", fname);
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msg(IObuff);
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return FALSE;
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}
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s_refresh(NOT_VALID);
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sprintf(IObuff, "\"%s\" %s%d line%s, %ld character%s",
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fname,
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incomplete ? "[Incomplete last line] " : "",
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linecnt, (linecnt > 1) ? "s" : "",
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nchars, (nchars > 1) ? "s" : "");
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buf2[0] = NUL;
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if (nonascii || nulls) {
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if (nonascii) {
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if (nulls)
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sprintf(buf2, " (%d null, %d non-ASCII)",
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nulls, nonascii);
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else
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sprintf(buf2, " (%d non-ASCII)", nonascii);
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} else
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sprintf(buf2, " (%d null)", nulls);
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}
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strcat(IObuff, buf2);
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msg(IObuff);
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return FALSE;
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}
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/*
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* writeit - write to file 'fname' lines 'start' through 'end'
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*
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* If either 'start' or 'end' contain null line pointers, the default is to use
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* the start or end of the file respectively.
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*/
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bool_t
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writeit(char *fname, LPtr *start, LPtr *end)
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{
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FILE *f;
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FILE *fopen();
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FILE *fopenb(); /* open in binary mode, where needed */
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char *s;
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long nchars;
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int lines;
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LPtr *p;
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#ifdef GSOS
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int linesize,inind;
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char *line_ptr,*saveb1;
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#endif
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sprintf(IObuff, "\"%s\"", fname);
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msg(IObuff);
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#ifdef GSOS
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signal(SIGTSTP,SIG_IGN);
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#endif
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/*
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* Form the backup file name - change foo.* to foo.bak - use IObuff to
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* hold the backup file name
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*/
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strcpy(IObuff, fname);
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for (s = IObuff; *s && *s != '.'; s++);
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*s = NUL;
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strcat(IObuff, ".bak");
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/*
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* Delete any existing backup and move the current version to the backup.
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* For safety, we don't remove the backup until the write has finished
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* successfully. And if the 'backup' option is set, leave it around.
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*/
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rename(fname, IObuff);
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f = P(P_CR) ? fopen(fname, "w") : fopenb(fname, "w");
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if (f == NULL) {
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emsg("Can't open file for writing!");
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return FALSE;
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}
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#ifdef GSOS
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savebuf = malloc(BUFSIZE1+1); /* allocate our big memory-save buffer */
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saveb1 = savebuf;
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#endif
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/*
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* If we were given a bound, start there. Otherwise just start at the
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* beginning of the file.
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*/
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if (start == NULL || start->linep == NULL)
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p = Filemem;
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else
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p = start;
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lines = 0;
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nchars = 0;
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#ifdef GSOS
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outind = 0;
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fd = fileno(f);
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#endif
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do {
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#ifndef GSOS
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fprintf(f, "%s\n", p->linep->s);
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#else
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line_ptr = p->linep->s;
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asm {
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stz inind
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agin: ldy inind
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lda [line_ptr],y
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and #0xff
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beq done
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ldy outind
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cpy #BUFSIZE1
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bcc otaydude
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pha
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jsl flushout
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pla
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ldy #0
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otaydude: sta [saveb1],y
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iny
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sty outind
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inc inind
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jmp agin
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done: sty linesize
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lda #13
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ldy outind
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sta [saveb1],y
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iny
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sty outind
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lda linesize
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clc
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adc nchars
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sta nchars
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}
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#endif
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lines++;
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#ifndef GSOS
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nchars += strlen(p->linep->s) + 1;
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#endif
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/*
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* If we were given an upper bound, and we just did that line, then
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* bag it now.
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*/
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if (end != NULL && end->linep != NULL) {
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if (end->linep == p->linep)
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break;
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}
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} while ((p = nextline(p)) != NULL);
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#ifdef GSOS
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flushout();
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free(savebuf);
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#endif
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fclose(f);
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/*
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* Remove the backup unless they want it left around
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*/
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if (!P(P_BK))
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remove(IObuff);
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sprintf(IObuff, "\"%s\" %d line%s, %ld character%s", fname,
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lines, (lines > 1) ? "s" : "",
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nchars, (nchars > 1) ? "s" : "");
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msg(IObuff);
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UNCHANGED;
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#ifdef GSOS
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{
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GSString255Ptr fn;
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extern void stopHandler(int,int);
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fn = malloc(strlen(fname)+2);
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fn->length = strlen(fname);
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strncpy(fn->text,fname,fn->length);
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finfo.pCount = 4;
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finfo.pathname = fn;
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SetFileInfoGS(&finfo);
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free(fn);
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}
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signal(SIGTSTP, stopHandler); /* handle ^Z with a message */
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#endif
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return TRUE;
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}
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