mirror of
https://github.com/GnoConsortium/gno.git
synced 2024-10-31 11:07:44 +00:00
784e3de7cd
passwd, ps, purge, shutdown, stty, upper, and vi. These sources are for the versions of the utils shipped with GNO v2.0.4.
376 lines
9.3 KiB
C
376 lines
9.3 KiB
C
/*
|
|
* STEVIE - Simply Try this Editor for VI Enthusiasts
|
|
*
|
|
* Code Contributions By : Tim Thompson twitch!tjt
|
|
* Tony Andrews onecom!wldrdg!tony
|
|
* G. R. (Fred) Walter watmath!grwalter
|
|
*/
|
|
|
|
#ifdef __ORCAC__
|
|
#pragma stacksize 2048
|
|
#define MAINSEG
|
|
#include <stdio.h>
|
|
#include <gno/gno.h>
|
|
#include <gno/signal.h>
|
|
#endif
|
|
|
|
#ifdef AMIGA
|
|
# include <proto/exec.h>
|
|
#endif
|
|
|
|
#include "stevie.h"
|
|
|
|
#ifdef AMIGA
|
|
int Aux_Device = FALSE;
|
|
#endif
|
|
|
|
int Rows; /* Number of Rows and Columns */
|
|
int Columns; /* in the current window. */
|
|
|
|
int CheckTopcharAndBotchar = FALSE;
|
|
int MustUpdateBotchar = FALSE;
|
|
int ValidToCurschar = FALSE;
|
|
int LineNotValid = FALSE;
|
|
|
|
int NumLineSizes = -1; /* # of active LineSizes */
|
|
LINE **LinePointers = NULL; /* Pointer to the line for LineSizes */
|
|
char *LineSizes = NULL; /* Size of a line (pline output) */
|
|
|
|
char *Filename = NULL;/* Current file name */
|
|
|
|
LPtr *Filemem; /* The contents of the file, as a single
|
|
* array. */
|
|
LPtr *Filetop; /* Line 'above' the start of the file */
|
|
|
|
LPtr *Fileend; /* Pointer to the end of the file in Filemem.
|
|
* (It points to the byte AFTER the last
|
|
* byte.) */
|
|
|
|
LPtr *Topchar; /* Pointer to the byte in Filemem which is in
|
|
* the upper left corner of the screen. */
|
|
|
|
LPtr *Botchar; /* Pointer to the byte in Filemem which is
|
|
* just off the bottom of the screen. */
|
|
|
|
LPtr *Curschar; /* Pointer to byte in Filemem at which the
|
|
* cursor is currently placed. */
|
|
|
|
int Curscol; /* Current position of cursor (column) */
|
|
int Cursrow; /* Current position of cursor (row) */
|
|
|
|
int Cursvcol; /* Current virtual column, the column number
|
|
* of the file's actual line, as opposed to
|
|
* the column number we're at on the screen.
|
|
* This makes a difference on lines that span
|
|
* more than one screen line. */
|
|
|
|
int Curswant = 0; /* The column we'd like to be at. This is
|
|
* used try to stay in the same column
|
|
* through up/down cursor motions. */
|
|
|
|
bool_t set_want_col; /* If set, then update Curswant the next time
|
|
* through cursupdate() to the current
|
|
* virtual column. */
|
|
|
|
int State = NORMAL; /* This is the current state of the command
|
|
* interpreter. */
|
|
|
|
int Prenum = 0; /* The (optional) number before a command. */
|
|
|
|
LPtr *Insstart; /* This is where the latest insert/append
|
|
* mode started. */
|
|
|
|
bool_t Changed = FALSE;/* Set to TRUE if something in the file has
|
|
* been changed and not written out. */
|
|
|
|
char *IObuff; /* file reads are done, one line at a time,
|
|
* into this buffer; as well as sprintf's */
|
|
|
|
char *Insbuffptr = NULL;
|
|
char *Insbuff; /* Each insertion gets stuffed into this
|
|
* buffer. */
|
|
|
|
char *Readbuffptr = NULL;
|
|
char *Readbuff; /* Having this buffer allows STEVIE to easily
|
|
* make itself do commands */
|
|
|
|
char *Redobuffptr = NULL;
|
|
char *Redobuff; /* Each command should stuff characters into
|
|
* this buffer that will re-execute itself. */
|
|
|
|
bool_t UndoInProgress = FALSE; /* Set to TRUE if undo'ing */
|
|
char *Undobuffptr = NULL;
|
|
char *Undobuff; /* Each command should stuff characters into
|
|
* this buffer that will undo its effects. */
|
|
|
|
char *UndoUndobuffptr = NULL;
|
|
char *UndoUndobuff; /* Each command should stuff characters into
|
|
* this buffer that will undo its undo. */
|
|
|
|
char *Yankbuffptr = NULL;
|
|
char *Yankbuff; /* Yank buffer */
|
|
|
|
char last_command = NUL; /* last command */
|
|
char last_command_char = NUL; /* character needed to undo
|
|
* last command */
|
|
|
|
bool_t RedrawingDisabled = FALSE; /* Set to TRUE if undo'ing or
|
|
* put'ing */
|
|
|
|
char **files = NULL; /* list of input files */
|
|
int numfiles = 0; /* number of input files */
|
|
int curfile; /* number of the current file */
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
fprintf(stderr, "usage: stevie [file ...]\n");
|
|
fprintf(stderr, " stevie -t tag\n");
|
|
fprintf(stderr, " stevie +[num] file\n");
|
|
fprintf(stderr, " stevie +/pat file\n");
|
|
exit(1);
|
|
}
|
|
|
|
#ifdef AMIGA
|
|
void
|
|
#else
|
|
int
|
|
#endif
|
|
main(int argc, char **argv)
|
|
{
|
|
char *initstr; /* init string from the environment */
|
|
char *tag = NULL; /* tag from command line */
|
|
char *pat = NULL; /* pattern from command line */
|
|
int line = -1; /* line number from command line */
|
|
|
|
int atoi(char *);
|
|
char *getenv(char *);
|
|
|
|
#ifdef __ORCAC__
|
|
{
|
|
extern void stopHandler(int,int);
|
|
signal(SIGINT, SIG_IGN); /* vi should ignore ^C requests */
|
|
signal(SIGTSTP, stopHandler); /* handle ^Z with a message */
|
|
}
|
|
#endif
|
|
|
|
#ifdef AMIGA
|
|
{
|
|
struct Library *DosBase;/* Used for checking version */
|
|
|
|
DosBase = OpenLibrary("dos.library", 33);
|
|
if (!DosBase) {
|
|
fprintf(stderr,
|
|
"\nSTEVIE requires Version 33 or later of dos.library.\n");
|
|
exit(2);
|
|
} else {
|
|
CloseLibrary(DosBase);
|
|
}
|
|
|
|
/*
|
|
* I don't think STEVIE should be exited with a break.
|
|
*/
|
|
(void) signal(SIGINT, SIG_IGN);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Process the command line arguments.
|
|
*/
|
|
if (argc > 1) {
|
|
switch (argv[1][0]) {
|
|
|
|
case '-': /* -t tag */
|
|
if (argv[1][1] != 't')
|
|
usage();
|
|
|
|
if (argv[2] == NULL)
|
|
usage();
|
|
|
|
tag = argv[2];
|
|
numfiles = 1;
|
|
break;
|
|
|
|
case '+': /* +n or +/pat */
|
|
if (argv[1][1] == '/') {
|
|
if (argv[2] == NULL)
|
|
usage();
|
|
Filename = strsave(argv[2]);
|
|
pat = &(argv[1][1]);
|
|
numfiles = 1;
|
|
|
|
} else if (isdigit(argv[1][1]) || argv[1][1] == NUL) {
|
|
if (argv[2] == NULL)
|
|
usage();
|
|
Filename = strsave(argv[2]);
|
|
numfiles = 1;
|
|
|
|
line = (isdigit(argv[1][1])) ?
|
|
atoi(&(argv[1][1])) : 0;
|
|
} else
|
|
usage();
|
|
|
|
break;
|
|
|
|
default: /* must be a file name */
|
|
#ifdef WILD_CARDS
|
|
ExpandWildCards(argc - 1, &(argv[1]), &numfiles, &files);
|
|
if (numfiles == 0)
|
|
numfiles = 1;
|
|
else
|
|
Filename = strsave(files[0]);
|
|
#else
|
|
Filename = strsave(argv[1]);
|
|
files = &(argv[1]);
|
|
numfiles = argc - 1;
|
|
#endif
|
|
if (numfiles > 1)
|
|
printf("%d files to edit\n", numfiles);
|
|
break;
|
|
}
|
|
} else {
|
|
numfiles = 1;
|
|
}
|
|
curfile = 0;
|
|
|
|
windinit();
|
|
|
|
/*
|
|
* Allocate LPtr structures for all the various position pointers and for
|
|
* the many buffers.
|
|
*/
|
|
Filetop = (LPtr *) alloc((unsigned) sizeof(LPtr));
|
|
Filemem = (LPtr *) alloc((unsigned) sizeof(LPtr));
|
|
Fileend = (LPtr *) alloc((unsigned) sizeof(LPtr));
|
|
Topchar = (LPtr *) alloc((unsigned) sizeof(LPtr));
|
|
Curschar = (LPtr *) alloc((unsigned) sizeof(LPtr));
|
|
Botchar = (LPtr *) alloc((unsigned) sizeof(LPtr));
|
|
Insstart = (LPtr *) alloc((unsigned) sizeof(LPtr));
|
|
IObuff = alloc(IOSIZE);
|
|
Insbuff = alloc(INSERT_SIZE);
|
|
Readbuff = alloc(READSIZE);
|
|
Redobuff = alloc(REDO_UNDO_SIZE);
|
|
Undobuff = alloc(REDO_UNDO_SIZE);
|
|
UndoUndobuff = alloc(REDO_UNDO_SIZE);
|
|
Yankbuff = alloc(YANKSIZE);
|
|
if (Filetop == NULL ||
|
|
Filemem == NULL ||
|
|
Fileend == NULL ||
|
|
Topchar == NULL ||
|
|
Curschar == NULL ||
|
|
Botchar == NULL ||
|
|
Insstart == NULL ||
|
|
IObuff == NULL ||
|
|
Insbuff == NULL ||
|
|
Readbuff == NULL ||
|
|
Redobuff == NULL ||
|
|
Undobuff == NULL ||
|
|
UndoUndobuff == NULL ||
|
|
Yankbuff == NULL) {
|
|
fprintf(stderr, "Can't allocate data structures\n");
|
|
windexit(0);
|
|
}
|
|
screenalloc();
|
|
filealloc(); /* Initialize Filemem, Filetop & Fileend */
|
|
|
|
s_clear();
|
|
|
|
initstr = getenv("EXINIT");
|
|
if (initstr != NULL) {
|
|
char *lp, buf[128];
|
|
|
|
lp = getenv("LINES");
|
|
if (lp != NULL) {
|
|
sprintf(buf, "%s lines=%s", initstr, lp);
|
|
readcmdline(':', buf);
|
|
} else
|
|
readcmdline(':', initstr);
|
|
}
|
|
if (Filename != NULL) {
|
|
if (readfile(Filename, Filemem, FALSE))
|
|
filemess("[New File]");
|
|
} else {
|
|
s_refresh(NOT_VALID);
|
|
msg("Empty Buffer");
|
|
}
|
|
|
|
setpcmark();
|
|
|
|
if (tag) {
|
|
stuffReadbuff(":ta ");
|
|
stuffReadbuff(tag);
|
|
stuffReadbuff("\n");
|
|
} else if (pat) {
|
|
stuffReadbuff(pat);
|
|
stuffReadbuff("\n");
|
|
} else if (line >= 0) {
|
|
if (line > 0)
|
|
stuffnumReadbuff(line);
|
|
stuffReadbuff("G");
|
|
}
|
|
edit();
|
|
/* NOTREACHED */
|
|
/* windexit(0); */
|
|
}
|
|
|
|
void
|
|
stuffReadbuff(char *s)
|
|
{
|
|
if (Readbuffptr == NULL) {
|
|
if ((strlen(s) + 1) < READSIZE) {
|
|
strcpy(Readbuff, s);
|
|
Readbuffptr = Readbuff;
|
|
return;
|
|
}
|
|
} else if ((strlen(Readbuff) + (strlen(s) + 1)) < READSIZE) {
|
|
strcat(Readbuff, s);
|
|
return;
|
|
}
|
|
emsg("Couldn't stuffReadbuff() - clearing Readbuff\n");
|
|
*Readbuff = NUL;
|
|
Readbuffptr = NULL;
|
|
}
|
|
|
|
void
|
|
stuffnumReadbuff(int n)
|
|
{
|
|
char buf[32];
|
|
|
|
sprintf(buf, "%d", n);
|
|
stuffReadbuff(buf);
|
|
}
|
|
|
|
/* OPTRESULT */
|
|
char
|
|
vgetc(void)
|
|
{
|
|
int c;
|
|
|
|
/*
|
|
* inchar() may map special keys by using stuffReadbuff(). If it does so,
|
|
* it returns -1 so we know to loop here to get a real char.
|
|
*/
|
|
do {
|
|
if (Readbuffptr != NULL) {
|
|
char nextc = *Readbuffptr++;
|
|
|
|
if (*Readbuffptr == NUL) {
|
|
*Readbuff = NUL;
|
|
Readbuffptr = NULL;
|
|
}
|
|
return (nextc);
|
|
}
|
|
c = inchar();
|
|
} while (c == -1);
|
|
|
|
return (char) c;
|
|
}
|
|
|
|
char
|
|
vpeekc(void)
|
|
{
|
|
if (Readbuffptr != NULL)
|
|
return (*Readbuffptr);
|
|
return (NUL);
|
|
}
|