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emailler/apps/edit.c

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////////////////////////////////////////////////////////////////////////////
// Simple text editor
// Supports Apple //e Auxiliary memory and RamWorks style expansions
// Bobbi July-Aug 2020
/////////////////////////////////////////////////////////////////////////////
// TODO: File picker!!
// TODO: Bug - cursor down at EOF succeeds when it should fail
// TODO: Search options - ignore case, complete word.
// Note: Use my fork of cc65 to get a flashing cursor!!
#define AUXMEM // Still somewhat experimental
#include <conio.h>
#include <ctype.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define NCOLS 80 // Width of editing screen
#define NROWS 22 // Height of editing screen
#define CURSORROW 10 // Row cursor initially shown on (if enough text)
#define PROMPT_ROW NROWS + 1 // Row where input prompt is shown
#define IOSZ 1024 // Size of chunks to use when loading/saving file
#define CUTBUFSZ 8192 // Size of cut buffer. Must be >IOSZ.
#define EOL '\r' // For ProDOS
#define BELL 0x07
#define BACKSPACE 0x08
#define RETURN 0x0d
#define ESC 0x1b
#define DELETE 0x7f
#ifdef AUXMEM
#define BUFSZ 0xb7fe // Aux from 0x800 to 0xbfff, minus a pad byte
char iobuf[CUTBUFSZ]; // Buffer for disk I/O and cut/paste
uint8_t banktbl[1+8*16]; // Handles up to 8MB. Map of banks.
uint8_t auxbank = 0; // Currently selected aux bank (physical)
uint8_t l_auxbank = 1; // Currently selected aux bank (logical)
uint16_t cutbuflen = 0; // Length of data in cut buffer
#else
#define BUFSZ (20480 - 1024) // 19KB
char gapbuf[BUFSZ];
char padding = 0; // To null terminate for strstr()
#endif
// The following fields, plus the gap buffer, represent the state of
// the current buffer. These are stashed in each aux page from 0x200 up.
// Total 80 + 3 + 2 + 2 = 87 bytes
#define BUFINFOSZ 87
char filename[80] = "";
uint8_t status[3] = {0, 0, 0}; // status[0] is 1 if file has been modified
// status[1] is 1 if should warn for overwrite
// status[2] is part # for multi-part files
uint16_t gapbegin = 0;
uint16_t gapend = BUFSZ - 1;
char userentry[82] = ""; // Couple extra chars so we can store 80 col line
char search[80] = "";
char replace[80] = "";
uint8_t rowlen[NROWS]; // Number of chars on each row of screen
// Interface to read_char_update_pos()
uint8_t do_print;
uint16_t pos, startsel, endsel;
uint8_t row, col;
uint8_t cursrow, curscol; // Cursor position is kept here by draw_screen()
uint8_t quit_to_email; // If 1, launch EMAIL.SYSTEM on quit
enum editmode {SEL_NONE, SEL_SELECT, SRCH1, SRCH2, SRCH3};
enum editmode mode;
// Mousetext Open-Apple
char openapple[] = "\x0f\x1b""A\x18\x0e";
// Mousetext Closed-Apple
char closedapple[] = "\x0f\x1b""@\x18\x0e";
/*
* Return number of bytes of freespace in gapbuf
*/
#define FREESPACE() (gapend - gapbegin + 1)
/*
* Return number of bytes of data in gapbuf
*/
#define DATASIZE() (gapbegin + (BUFSZ - 1 - gapend))
/*
* Obtain current position in gapbuf
* This is the positon where the next character will be inserted
*/
#define GETPOS() (gapbegin)
/*
* Obtain one byte from the gapbuf[] in aux memory
* Must be in LC
* i - Index into gapbuf[]
* Returns value at gapbuf[i]
*/
#pragma code-name (push, "LC")
char get_gapbuf(uint16_t i) {
#ifdef AUXMEM
*(uint16_t*)(0xfe) = (uint16_t)0x0800 + i; // Stuff address in Zero Page
__asm__("lda %v", auxbank);
__asm__("sta $c073"); // Set aux bank
__asm__("sta $c003"); // Read aux mem
__asm__("lda ($fe)");
__asm__("sta $ff");
__asm__("sta $c002"); // Read main mem
__asm__("lda #$00");
__asm__("sta $c073"); // Set aux bank back to 0
return *(uint8_t*)(0xff);
#else
return gapbuf[i];
#endif
}
#pragma code-name (pop)
/*
* Set one byte in the gapbuf[] in aux memory
* Must be in LC
* i - Index into gapbuf
* c - Byte value to set
*/
#pragma code-name (push, "LC")
void set_gapbuf(uint16_t i, char c) {
#ifdef AUXMEM
__asm__("lda %v", auxbank);
__asm__("sta $c073"); // Set aux bank
__asm__("sta $c005"); // Write aux mem
(*(char*)((char*)0x0800 + i)) = c;
__asm__("sta $c004"); // Write main mem
__asm__("lda #$00");
__asm__("sta $c073"); // Set aux bank back to 0
#else
gapbuf[i] = c;
#endif
}
#pragma code-name (pop)
/*
* Do a memmove() on aux memory. Uses indices into gapbuf[].
* Must be in LC
* dst - Destination index into gapbuf[]
* src - Source index into gapbuf[]
* n - Length in bytes
*/
#pragma code-name (push, "LC")
void move_in_gapbuf(uint16_t dst, uint16_t src, size_t n) {
#ifdef AUXMEM
if (dst > src) {
// Start with highest addr and copy downwards
*(uint16_t*)(0xfa) = n; // Stuff sz in ZP
*(uint16_t*)(0xfc) = (uint16_t)0x0800 + src + n - 1; // Stuff src in ZP
*(uint16_t*)(0xfe) = (uint16_t)0x0800 + dst + n - 1; // Stuff dst in ZP
#ifdef AUXMEM
__asm__("lda %v", auxbank);
__asm__("sta $c073"); // Set aux bank
__asm__("sta $c005"); // Write aux mem
__asm__("sta $c003"); // Read aux mem
#endif
dl1:
__asm__("lda ($fc)"); // *src
__asm__("sta ($fe)"); // -> *dst
__asm__("lda $fc"); // LSB of src
__asm__("bne %g", ds1);
__asm__("dec $fd"); // MSB of src
ds1:
__asm__("dec $fc"); // LSB of src
__asm__("lda $fe"); // LSB of dst
__asm__("bne %g", ds2);
__asm__("dec $ff"); // MSB of dst
ds2:
__asm__("dec $fe"); // LSB of dst
__asm__("lda $fa"); // LSB of n
__asm__("bne %g", ds3);
__asm__("dec $fb"); // MSB of n
ds3:
__asm__("dec $fa"); // LSB of n
__asm__("bne %g", dl1); // Loop
__asm__("lda $fb"); // MSB of n
__asm__("bne %g", dl1); // Loop
#ifdef AUXMEM
__asm__("sta $c002"); // Read main mem
__asm__("sta $c004"); // Write main mem
__asm__("lda #$00");
__asm__("sta $c073"); // Set aux bank back to 0
#endif
} else {
// Start with highest addr and copy upwards
*(uint16_t*)(0xfa) = n; // Stuff sz in ZP
*(uint16_t*)(0xfc) = (uint16_t)0x0800 + src; // Stuff src in ZP
*(uint16_t*)(0xfe) = (uint16_t)0x0800 + dst; // Stuff dst in ZP
#ifdef AUXMEM
__asm__("lda %v", auxbank);
__asm__("sta $c073"); // Set aux bank
__asm__("sta $c005"); // Write aux mem
__asm__("sta $c003"); // Read aux mem
#endif
al1:
__asm__("lda ($fc)"); // *src
__asm__("sta ($fe)"); // -> *dst
__asm__("inc $fc"); // LSB of src
__asm__("bne %g", as1);
__asm__("inc $fd"); // MSB of src
as1:
__asm__("inc $fe"); // LSB of dst
__asm__("bne %g", as2);
__asm__("inc $ff"); // MSB of dst
as2:
__asm__("lda $fa"); // LSB of n
__asm__("bne %g", as3);
__asm__("dec $fb"); // MSB of n
as3:
__asm__("dec $fa"); // LSB of n
__asm__("bne %g", al1); // Loop
__asm__("lda $fb"); // MSB of n
__asm__("bne %g", al1); // Loop
#ifdef AUXMEM
__asm__("sta $c002"); // Read main mem
__asm__("sta $c004"); // Write main mem
__asm__("lda #$00");
__asm__("sta $c073"); // Set aux bank back to 0
#endif
}
#else
memmove(gapbuf + dst, gapbuf + src, n);
#endif
}
#pragma code-name (pop)
#pragma data-name (push, "LC")
char needle[80] = ""; // Must be in LC memory if using AUXMEM
#pragma data-name (pop)
/*
* Do a strstr() on aux memory. Uses index into gapbuf[].
* Must be in LC
* i - Index into gapbuf[]
* srch - String to search for
* loc - Location where string found (index into gapbuf[]) returned here
* Returns 1 if found, 0 otherwise
*/
#pragma code-name (push, "LC")
#pragma optimize (off)
uint8_t search_in_gapbuf(uint16_t i, char *srch, uint16_t *loc) {
__asm__("lda $c083"); // Read and write LC RAM bank 2
__asm__("lda $c083"); // Read and write LC RAM bank 2
memcpy(needle, srch, 80);
// ZP usage
// $f7: TMP1
// $f8-$f9: PTR4 in original strstr.s code.
// $fa-$fb: PTR1 in original strstr.s code.
// $fc-$fd: PTR2 in original strstr.s code.
// $fe-$ff: PTR3 in original strstr.s code.
*(uint16_t*)(0xfc) = (uint16_t)needle;
*(uint16_t*)(0xf8) = (uint16_t)needle; // Another copy of needle ptr
#ifdef AUXMEM
*(uint16_t*)(0xfa) = (uint16_t)0x0800 + i; // Haystack pointer
__asm__("lda %v", auxbank);
__asm__("sta $c073"); // Set aux bank
__asm__("sta $c005"); // Write aux mem
__asm__("sta $c003"); // Read aux mem
#else
*(uint16_t*)(0xfa) = (uint16_t)gapbuf + i; // Haystack pointer
#endif
__asm__("ldy #$00");
__asm__("lda ($fc),y"); // Get first byte of needle
__asm__("beq %g", found); // Needle is empty --> we're done
// Search for beginning of string
__asm__("sta $f7"); // Save start of needle
l1:
__asm__("lda ($fa),y"); // Get next char from haystack
__asm__("beq %g", notfound); // Jump if end
__asm__("cmp $f7"); // Start of needle found?
__asm__("beq %g", l2); // Jump if so
__asm__("iny"); // Next char
__asm__("bne %g", l1);
__asm__("inc $fb"); // Bump high byte of haystack
__asm__("bne %g", l1); // Branch always
// We found the start of needle in haystack
l2:
__asm__("tya"); // Get offset
__asm__("clc");
__asm__("adc $fa");
__asm__("sta $fa"); // Make ptr1 point to start
__asm__("bcc %g", l3);
__asm__("inc $fb");
// ptr1 points to the start of needle now. Setup temporary pointers for the
// search. The low byte of ptr4 is already set.
l3:
__asm__("sta $fe"); // LSB PTR3
__asm__("lda $fb"); // MSB PTR1
__asm__("sta $ff"); // MSB PTR3
__asm__("lda $fd"); // MSB PTR2
__asm__("sta $f9"); // MSB PTR4
__asm__("ldy #1"); // First char is identical, so start on second
// Do the compare
l4:
__asm__("lda ($f8),y"); // Get char from needle
__asm__("beq %g", found); // Jump if end of needle (-> found)
__asm__("cmp ($fe),y"); // Compare with haystack
__asm__("bne %g", l5); // Jump if not equal
__asm__("iny"); // Next char
__asm__("bne %g", l4);
__asm__("inc $ff");
__asm__("inc $f9"); // Bump hi byte of pointers
__asm__("bne %g", l4); // Next char (branch always)
// The strings did not compare equal, search next start of needle
l5:
__asm__("ldy #1"); // Start after this char
__asm__("bne %g", l1); // Branch always
// We found the needle
found:
#ifdef AUXMEM
__asm__("sta $c002"); // Read main mem
__asm__("sta $c004"); // Write main mem
__asm__("lda #$00");
__asm__("sta $c073"); // Set aux bank back to 0
*loc = *(uint16_t*)0xfa - 0x0800;
#else
*loc = *(uint16_t*)0xfa - (uint16_t)gapbuf;
#endif
return 1;
// We reached end of haystack without finding needle
notfound:
#ifdef AUXMEM
__asm__("sta $c002"); // Read main mem
__asm__("sta $c004"); // Write main mem
__asm__("lda #$00");
__asm__("sta $c073"); // Set aux bank back to 0
#endif
return 0;
//#else
// char *p = strstr(gapbuf + i, needle);
// if (p) {
// *loc = p - gapbuf;
// return 1;
// } else
// return 0;
//#endif
}
#pragma optimize (on)
#pragma code-name (pop)
/*
* Annoying beep
*/
void beep(void) {
uint8_t *p = (uint8_t*)0xc030; // Speaker
uint8_t junk;
uint16_t i;
for (i = 0; i < 200; ++i) {
junk = *p;
for (junk = 0; junk < 50; ++junk); // Reduce pitch
}
}
/*
* Clear to EOL
*/
void clreol(void) {
uint8_t x = wherex(), y = wherey();
cclear(80 - x);
gotoxy(x, y);
}
/*
* Clear to EOL, wrap to next line
*/
void clreol_wrap(void) {
uint8_t x = wherex();
cclear(80 - x);
gotox(x);
}
/*
* Clear line
*/
void clrline(void) {
uint8_t x = wherex();
gotox(0);
cclear(80);
gotox(x);
}
/*
* Put cursor at beginning of PROMPT_ROW
*/
void goto_prompt_row(void) {
gotoxy(0, PROMPT_ROW);
}
/*
* Refresh the status line at the bottom of the screen
*/
void update_status_line(void) {
uint8_t nofile = 0;
uint8_t l;
static char selmsg1[] = ": Go to end of selection, then [Return]";
static char selmsg2[] = ": Go to target, then [Return] to ";
goto_prompt_row();
if (strlen(filename) == 0) {
strcpy(filename, "<scratch>");
nofile = 1;
}
revers(1);
switch (mode) {
case SEL_NONE:
if (status[2] == 0) {
cprintf("OA-? Help | [%03u] %c File:%s %2uKB free",
l_auxbank, status[0] ? '*' : ' ', filename,
(FREESPACE() + 512) / 1024);
l = 44 - strlen(filename);
} else {
snprintf(userentry, 80, "%s Part:%u", filename, status[2]);
cprintf("OA-? Help | [%03u] %c File:%s %2uKB free",
l_auxbank, status[0] ? '*' : ' ', userentry,
(FREESPACE() + 512) / 1024);
l = 45 - strlen(userentry);
}
break;
case SEL_SELECT:
cprintf("Select: OA-[Space] to end");
l = 80 - 25;
break;
case SRCH1:
cprintf("Searching ...");
l = 80 - 13;
break;
case SRCH2:
cprintf("Searching - wrapped ...");
l = 80 - 23;
break;
case SRCH3:
if (status[2] == 0) {
cprintf("OA-? Help | [%03u] %c File:%s %2uKB free | Not Found",
l_auxbank, status[0] ? '*' : ' ', filename, (FREESPACE() + 512) / 1024);
l = 44 - 12 - strlen(filename);
} else {
snprintf(userentry, 80, "%s Part:%u", filename, status[2]);
cprintf("OA-? Help | [%03u] %c File:%s %2uKB free | Not Found",
l_auxbank, status[0] ? '*' : ' ', userentry,
(FREESPACE() + 512) / 1024);
l = 45 - 12 - strlen(userentry);
}
break;
}
cclear(l);
revers(0);
if (nofile)
strcpy(filename, "");
gotoxy(curscol, cursrow);
cursor(1);
}
/*
* Set modified status
*/
void set_modified(uint8_t mod) {
if (status[0] == mod)
return;
status[0] = mod;
update_status_line();
}
/*
* Prompt for a name in the bottom line of the screen
* Returns number of chars read.
* prompt - Message to display before > prompt
* is_file - if 1, restrict chars to those allowed in ProDOS filename
* Returns number of chars read, or 255 if ESC pressed
*/
uint8_t prompt_for_name(char *prompt, uint8_t is_file) {
uint16_t i;
char c;
cursor(0);
goto_prompt_row();
clreol();
revers(1);
cprintf("%s>", prompt);
revers(0);
gotox(2 + strlen(prompt));
i = 0;
while (1) {
c = cgetc();
if (is_file && !isalnum(c) && (c != RETURN) && (c != BACKSPACE) &&
(c != DELETE) && (c != ESC) && (c != '.') && (c != '/')) {
beep();
continue;
}
switch (c) {
case RETURN:
goto done;
case BACKSPACE:
case DELETE:
if (i > 0) {
gotox(wherex() - 1);
cputc(' ');
gotox(wherex() - 1);
--i;
} else
beep();
break;
case ESC:
userentry[0] = '\0';
i = 255;
goto esc_pressed;
default:
cputc(c);
userentry[i++] = c;
}
if (i == 79)
goto done;
}
done:
userentry[i] = '\0';
esc_pressed:
clrline();
gotoxy(curscol, cursrow);
cursor(1);
return i;
}
/*
* Prompt ok?
* Returns 0 for yes
* 1 for no
* 2 for ESC
*/
char prompt_okay(char *msg) {
char c;
cursor(0);
goto_prompt_row();
clreol();
revers(1);
cprintf("%s (y/n/ESC)", msg);
revers(0);
while (1) {
c = cgetc();
if ((c == 'y') || (c == 'Y') || (c == 'n') || (c == 'N') || c == ESC)
break;
beep();
}
if ((c == 'y') || (c == 'Y'))
c = 0;
else if (c == ESC)
c = 2;
else
c = 1;
update_status_line();
return c;
}
/*
* Error message
*/
void show_error(char *msg) {
cursor(0);
goto_prompt_row();
clreol();
beep();
revers(1);
cprintf("%s [Press Any Key]", msg);
revers(0);
cgetc();
update_status_line();
}
/*
* Insert a character into gapbuf at current position
* c - character to insert
*/
void insert_char(char c) {
if (FREESPACE()) {
set_gapbuf(gapbegin++, c);
return;
}
beep();
}
/*
* Delete the character to the left of the current position
*/
void delete_char(void) {
if (gapbegin == 0) {
beep();
return;
}
--gapbegin;
}
/*
* Delete the character to the right of the current position
*/
void delete_char_right(void) {
if (gapend == BUFSZ - 1) {
beep();
return;
}
++gapend;
}
/*
* Move the current position
* pos - position to which to move
*/
void jump_pos(uint16_t pos) {
uint16_t l;
if (pos > BUFSZ - 1) {
beep();
return;
}
if (pos == GETPOS())
return;
if (pos > GETPOS()) {
l = pos - gapbegin;
move_in_gapbuf(gapbegin, gapend + 1, l);
gapbegin += l;
gapend += l;
} else {
l = gapbegin - pos;
move_in_gapbuf(gapend - l + 1, gapbegin - l, l);
gapbegin -= l;
gapend -= l;
}
if (mode == SEL_SELECT)
endsel = gapbegin;
return;
}
/*
* Go to next tabstop
*/
uint8_t next_tabstop(uint8_t col) {
return (col / 8) * 8 + 8;
}
#ifdef AUXMEM
#define FROMAUX 0
#define TOAUX 1
/*
* Copy to/from aux memory using AUXMOVE
*/
void copyaux(char *src, char *dst, uint16_t len, uint8_t dir) {
char **a1 = (char**)0x3c;
char **a2 = (char**)0x3e;
char **a4 = (char**)0x42;
*a1 = src;
*a2 = src + len - 1; // AUXMOVE moves length+1 bytes!!
*a4 = dst;
if (dir == TOAUX) {
__asm__("sec"); // Copy main->aux
__asm__("jsr $c311"); // AUXMOVE
} else {
__asm__("clc"); // Copy aux->main
__asm__("jsr $c311"); // AUXMOVE
}
}
#endif
/*
* Translate logic aux bank number to physical.
* This is necessary because there may be 'holes' in the banks
* Logical banks are numbered 1..maxbank contiguously.
* Physical banks start at 0 and may be non-contiguous.
*/
uint8_t bank_log_to_phys(uint8_t l) {
return banktbl[l];
}
/*
* Change the active bank of aux memory
* Current physical bank is in auxbank
* logbank - desired logical bank
*/
#ifdef AUXMEM
#pragma code-name (push, "LC")
void change_aux_bank(uint8_t logbank) {
if (logbank > banktbl[0]) {
show_error("Nonexistent bank");
return;
}
l_auxbank = logbank;
// Saves filename[], status, gapbegin, gapend (BUFINFOSZ bytes)
__asm__("lda %v", auxbank);
__asm__("sta $c073"); // Set aux bank
copyaux(filename, (void*)0x0200, BUFINFOSZ, TOAUX);
// Load new filename[], status, gapbegin, gapend (BUFINFOSZ bytes)
auxbank = bank_log_to_phys(l_auxbank);
__asm__("lda %v", auxbank);
__asm__("sta $c073"); // Set aux bank
copyaux((void*)0x0200, filename, BUFINFOSZ, FROMAUX);
__asm__("lda #$00");
__asm__("sta $c073"); // Set aux bank back to 0
}
#pragma code-name (pop)
#endif
/*
* Used by load_file() when opening a new bank for a large file
* and also by CA-E "Extend file"
* Returns 0 if all is well, 1 if we run into an already occupied bank
*/
uint8_t open_new_aux_bank(uint8_t partnum) {
strcpy(userentry, filename);
status[2] = partnum;
if (l_auxbank >= banktbl[0])
return 1;
change_aux_bank(++l_auxbank);
if (DATASIZE() > 0) {
change_aux_bank(--l_auxbank);
return 1;
}
strcpy(filename, userentry);
return 0;
}
/*
* Spinner while loading / saving
* TODO: THIS IS NOT REALLY SAFE IF FILENAME IS TOO LONG!!!!!!!
*/
void spinner(uint32_t sz, uint8_t saving) {
static char chars[] = "|/-\\";
static char buf[80] = "";
static uint8_t i = 0;
gotoxy(0, PROMPT_ROW);
snprintf(buf, 80, "%s '%s': %c [%lu]",
(saving ? "Saving" : "Opening"), filename, chars[(i++) % 4], sz);
revers(1);
cprintf("%s", buf);
cclear(79 - strlen(buf));
revers(0);
}
// Forward declaration
void draw_screen(void);
/*
* Load a file from disk into the gapbuf
* filename - name of file to load
* replace - if 1, replace old file.
* initialcol - initial screen column
* Returns 0 on success
* 1 if file can't be opened
*/
#pragma code-name (push, "LC")
uint8_t load_file(char *fname, uint8_t replace) {
uint8_t partctr = 0;
uint8_t col;
char *p;
uint16_t i, j, s;
uint8_t c, cont;
FILE *fp = fopen(fname, "r");
if (!fp)
return 1;
if (!replace)
col = curscol;
goto_prompt_row();
if (replace) {
gapbegin = 0;
gapend = BUFSZ - 1;
col = 0;
}
#ifdef AUXMEM
cutbuflen = 0;
p = iobuf;
#else
p = gapbuf + gapend - IOSZ; // Read to mem just before gapend
#endif
do {
#ifndef AUXMEM
if (FREESPACE() < IOSZ * 2) {
show_error("File truncated");
goto done;
}
#endif
spinner(DATASIZE(), 0);
s = fread(p, 1, IOSZ, fp);
cont = (s == IOSZ ? 1 : 0);
for (i = 0; i < s; ++i) {
switch (p[i]) {
case '\r': // Native Apple2 files
case '\n': // UNIX files
set_gapbuf(gapbegin++, '\r');
col = 0;
#ifdef AUXMEM
if (replace && (FREESPACE() < 15000) && (banktbl[0] > 1)) {
draw_screen();
if (open_new_aux_bank(++partctr) == 1) {
snprintf(userentry, 80,
"Buffer [%03u] not avail. Truncating file.", l_auxbank + 1);
show_error(userentry);
if (partctr == 1) // If truncated to one part ...
status[2] = 0; // Make it a singleton
partctr = 0; // Prevent status[2] increment below
goto done;
}
}
#endif
break;
case '\t':
c = next_tabstop(col) - col;
for (j = 0; j < c; ++j)
set_gapbuf(gapbegin++, ' ');
col += c;
break;
default:
set_gapbuf(gapbegin++, p[i]);
++col;
}
#ifdef AUXMEM
// Will never happen in replace mode because
// we will have already opened a new bank
if (FREESPACE() < IOSZ * 2) {
show_error("File truncated");
goto done;
}
#else
if (FREESPACE() < IOSZ * 2) {
show_error("File truncated");
goto done;
}
#endif
}
} while (cont);
done:
fclose(fp);
if (replace) {
#ifdef AUXMEM
if (partctr > 0)
status[2] = ++partctr;
#endif
jump_pos(0);
pos = 0;
set_modified(0);
status[1] = 0; // No need to prompt for overwrite on save
startsel = endsel = 65535U;
mode = SEL_NONE;
}
return 0;
}
#pragma code-name (pop)
/*
* Save gapbuf to file
* If copymode is 0, use filename[] otherwise "CLIPBOARD"
* copymode - if 1, copy test from startsel to endsel only
* append - if 1, append to file instead of overwriting
* Returns 0 on success
* 1 if file can't be opened
*/
#ifndef AUXMEM
#pragma code-name (push, "LC")
#endif
uint8_t save_file(uint8_t copymode, uint8_t append) {
uint16_t pos = gapbegin;
uint16_t sz;
uint8_t retval = 1;
uint8_t i;
#ifdef AUXMEM
uint16_t p, j;
#else
char *p;
#endif
FILE *fp;
_filetype = PRODOS_T_TXT;
_auxtype = 0;
fp = fopen((copymode ? "CLIPBOARD" : filename), (append ? "a" : "w"));
if (!fp)
goto done;
jump_pos(copymode == 1 ? startsel : 0);
goto_prompt_row();
#ifdef AUXMEM
cutbuflen = 0;
p = gapend + 1;
#else
p = gapbuf + gapend + 1;
#endif
if (copymode)
sz = endsel - startsel;
else
sz = DATASIZE();
for (i = 0; i < sz / IOSZ; ++i) {
spinner(i * IOSZ, 1);
#ifdef AUXMEM
for (j = 0; j < IOSZ; ++j)
iobuf[j] = get_gapbuf(p++);
if (fwrite(iobuf, IOSZ, 1, fp) != 1)
goto done;
#else
if (fwrite(p, IOSZ, 1, fp) != 1)
goto done;
p += IOSZ;
#endif
}
spinner(i * IOSZ, 1);
#ifdef AUXMEM
for (j = 0; j < sz - (IOSZ * i); ++j)
iobuf[j] = get_gapbuf(p++);
if (fwrite(iobuf, sz - (IOSZ * i), 1, fp) != 1)
goto done;
#else
if (fwrite(p, sz - (IOSZ * i), 1, fp) != 1)
goto done;
#endif
retval = 0;
status[0] = 0; // No longer marked modified
done:
fclose(fp);
jump_pos(pos);
return retval;
}
#ifndef AUXMEM
#pragma code-name (pop)
#endif
/*
* Obtain the first bank number for the current file
*/
#ifdef AUXMEM
uint8_t find_first_bank(void) {
if (status[2] == 0) // Not a multi-bank file
return l_auxbank;
if (status[2] == 1) // First bank of multi-bank file
return l_auxbank;
return l_auxbank - status[2] + 1; // Assumes banks allocated in order
}
#endif
/*
* Save a large file that spans multiple banks
*/
#ifdef AUXMEM
uint8_t save_multibank_file(void) {
uint8_t bank = find_first_bank();
uint8_t origbank = l_auxbank;
uint8_t retval = 0, modified = 0, first = 1;
uint8_t filebank;
if (bank != origbank) {
change_aux_bank(bank);
draw_screen();
}
if (status[2] == 0) // Oh, it's actually just a single bank file
return save_file(0, 0);
if (status[2] != 1) {
show_error("SBF error"); // Should never happen
retval = 1;
goto done;
}
// Look at all banks and see if any are modified
do {
filebank = status[2];
if (status[1] == 1) {
modified = 1;
break;
}
change_aux_bank(++l_auxbank);
} while (status[2] == filebank + 1);
change_aux_bank(bank);
do {
filebank = status[2];
draw_screen();
if (save_file(0, (first == 1 ? 0 : 1)) == 1) {
retval = 1;
goto done;
}
first = 0;
change_aux_bank(++l_auxbank);
} while (status[2] == filebank + 1);
done:
if (origbank != l_auxbank) {
change_aux_bank(origbank);
draw_screen();
}
return retval;
}
#endif
/*
* Read next char from gapbuf[] and update state.
* Returns 1 on EOL, 0 otherwise
* If do_print is set, print char on the screen.
* Interface is via the following globals:
* do_print - if 1, update screen
* pos - position in buffer, advanced by one
* row, col - position on screen
* rowlen[] - length of each screen row in chars
*/
uint8_t read_char_update_pos(void) {
uint16_t delta = gapend - gapbegin;
char c;
if ((c = get_gapbuf(pos++)) == EOL) {
if (do_print) {
rowlen[row] = col + 1;
clreol_wrap();
gotox(0);
}
++row;
col = 0;
return 1;
}
if (((pos > startsel) && (pos <= endsel)) || // Left of cursor
((pos - delta > endsel) && (pos - delta <= startsel + 1))) // Right of cursor
revers(1);
else
revers(0);
if (do_print)
cputc(c);
revers(0);
++col;
if (do_print)
rowlen[row] = col;
if (col == NCOLS) {
++row;
col = 0;
}
return 0;
}
/*
* Draw screenful of text
*/
void draw_screen(void) {
uint16_t startpos;
uint8_t rowsabove, cursorrow;
// Initialize all rows to length 0 to cover those rows that may have
// no text and would otherwise be unitialized.
for (rowsabove = 0; rowsabove < NROWS; ++rowsabove)
rowlen[rowsabove] = 0;
// First we have to scan back to work out where in the buffer to
// start drawing on the screen at the top left. This is at most
// NROWS * NCOLS chars.
startpos = gapbegin;
if (startpos > NROWS * NCOLS)
startpos -= NROWS * NCOLS;
else
startpos = 0;
// Format the text and work out the number of rows it takes up
pos = startpos;
row = col = 0;
do_print = 0;
while (pos < gapbegin)
read_char_update_pos();
rowsabove = row; // Number of complete rows above cursor
if (rowsabove <= CURSORROW) {
pos = 0;
cursorrow = rowsabove;
} else {
cursorrow = CURSORROW;
// Now repeat the formatting of the text, eating the first
// (rowsabove - cursorrow) lines
pos = startpos;
row = col = 0;
while (row < (rowsabove - cursorrow))
read_char_update_pos();
}
// Finally actually write the text to the screen!
videomode(VIDEOMODE_80COL);
clrscr();
revers(0);
row = col = 0;
do_print = 1;
while (pos < gapbegin)
read_char_update_pos();
curscol = col;
cursrow = row;
// Now write the text after the cursor up to the end of the screen
pos = gapend + 1;
while ((pos < BUFSZ) && (row < NROWS))
read_char_update_pos();
update_status_line();
}
/*
* Scroll screen up and update rowlen[]
*/
void scroll_up() {
draw_screen();
}
/*
* Scroll screen down and update rowlen[]
*/
void scroll_down() {
draw_screen();
}
/*
* Returns 1 if current position in gap buffer is on the last line of
* the file (ie: no following CR), 0 otherwise
*/
uint8_t is_last_line(void) {
uint16_t p = gapend + 1;
while (p < BUFSZ) {
if (get_gapbuf(p++) == '\r')
return 0;
}
return 1;
}
/*
* Update screen after delete_char_right()
*/
void update_after_delete_char_right(void) {
uint8_t eol = 0;
uint8_t i;
col = curscol;
row = cursrow;
do_print = 1;
// Print rest of line up to EOL
pos = gapend + 1;
while (!eol && (pos < BUFSZ) && (row < NROWS)) {
i = col;
eol = read_char_update_pos();
}
if (is_last_line())
clreol_wrap();
// If necessary, print rest of screen
if ((get_gapbuf(gapend) == EOL) || (i == NCOLS - 1)) {
while ((pos < BUFSZ) && (row < NROWS))
read_char_update_pos();
clreol_wrap();
// Erase the rest of the screen (if any)
for (i = row + 1; i < NROWS; ++i) {
gotoxy(0, i);
clrline();
}
}
gotoxy(curscol, cursrow);
cursor(1);
}
/*
* Update screen after delete_char()
*/
void update_after_delete_char(void) {
uint8_t eol = 0;
uint8_t i;
col = curscol;
row = cursrow;
if (get_gapbuf(gapbegin) == EOL) {
// Special handling if we deleted an EOL
if (row > 0)
col = rowlen[--row] - 1;
else {
scroll_up();
return;
}
} else {
// Erase char to left of cursor & update row, col
gotox(wherex() - 1);
cputc(' ');
gotox(wherex() - 1);
if (col > 0)
--col;
else {
col = NCOLS - 1;
if (row > 0)
--row;
else {
scroll_up();
return;
}
}
}
curscol = col;
cursrow = row;
gotoxy(curscol, cursrow);
do_print = 1;
// Print rest of line up to EOL
pos = gapend + 1;
while (!eol && (pos < BUFSZ) && (row < NROWS)) {
i = col;
eol = read_char_update_pos();
}
if (is_last_line())
clreol_wrap();
// If necessary, print rest of screen
if ((get_gapbuf(gapbegin) == EOL) || (i == NCOLS - 1)) {
while ((pos < BUFSZ) && (row < NROWS))
read_char_update_pos();
clreol_wrap();
// Erase the rest of the screen (if any)
for (i = row + 1; i < NROWS; ++i) {
gotoxy(0, i);
clrline();
}
}
gotoxy(curscol, cursrow);
cursor(1);
}
/*
* Update screen after insert_char()
*/
void update_after_insert_char(void) {
uint8_t eol = 0;
uint8_t prevcol;
col = curscol;
row = cursrow;
// Print character just inserted
pos = gapbegin - 1;
do_print = 1;
read_char_update_pos();
curscol = col;
cursrow = row;
gotoxy(curscol, cursrow);
if (cursrow == NROWS) {
scroll_down();
return;
}
// Print rest of line up to EOL
pos = gapend + 1;
while (!eol && (pos < BUFSZ) && (row < NROWS)) {
prevcol = col;
eol = read_char_update_pos();
}
// If necessary, print rest of screen
if ((get_gapbuf(gapbegin - 1) == EOL) || (prevcol == 0))
while ((pos < BUFSZ) && (row < NROWS))
read_char_update_pos();
gotoxy(curscol, cursrow);
cursor(1);
}
/*
* Move the cursor left
*/
#pragma code-name (push, "LC")
void cursor_left(void) {
if (gapbegin > 0)
set_gapbuf(gapend--, get_gapbuf(--gapbegin));
else {
beep();
gotoxy(curscol, cursrow);
return;
}
if (curscol == 0) {
if (cursrow == 0) {
scroll_up();
if (cursrow == 0) {
beep();
return;
}
}
--cursrow;
curscol = rowlen[cursrow] - 1;
} else
--curscol;
gotoxy(curscol, cursrow);
if (mode == SEL_SELECT) {
endsel = gapbegin;
revers(gapbegin < startsel ? 1 : 0);
cputc(get_gapbuf(gapbegin));
}
revers(0);
gotoxy(curscol, cursrow);
}
#pragma code-name (pop)
/*
* Move the cursor right
*/
#pragma code-name (push, "LC")
void cursor_right(void) {
if (gapend < BUFSZ - 1)
set_gapbuf(gapbegin++, get_gapbuf(++gapend));
else {
beep();
goto done;
}
++curscol;
if (gapend == BUFSZ - 1)
goto done;
if (curscol == rowlen[cursrow]) {
if (cursrow == NROWS - 1)
scroll_down();
++cursrow;
curscol = 0;
}
done:
if (mode == SEL_SELECT) {
endsel = gapbegin;
revers(gapbegin > startsel ? 1 : 0);
cputc(get_gapbuf(gapbegin - 1));
}
revers(0);
gotoxy(curscol, cursrow);
}
#pragma code-name (pop)
/*
* Move the cursor up
* Returns 1 if at top, 0 otherwise
*/
#pragma code-name (push, "LC")
uint8_t cursor_up(void) {
uint8_t i;
if (cursrow == 0) {
scroll_up();
if (cursrow == 0) {
beep();
gotoxy(curscol, cursrow);
return 1;
}
}
for (i = curscol; i > 0; --i) {
set_gapbuf(gapend--, get_gapbuf(--gapbegin));
if (mode == SEL_SELECT) {
gotoxy(i - 1, cursrow);
revers(gapbegin < startsel ? 1 : 0);
cputc(get_gapbuf(gapbegin));
}
}
--cursrow;
// Short line ...
if (curscol > rowlen[cursrow] - 1)
curscol = rowlen[cursrow] - 1;
for (i = rowlen[cursrow]; i > curscol; --i) {
set_gapbuf(gapend--, get_gapbuf(--gapbegin));
if (mode == SEL_SELECT) {
gotoxy(i - 1, cursrow);
revers(gapbegin < startsel ? 1 : 0);
cputc(get_gapbuf(gapbegin));
}
}
if (mode == SEL_SELECT) {
endsel = gapbegin;
}
revers(0);
gotoxy(curscol, cursrow);
return 0;
}
#pragma code-name (pop)
/*
* Move the cursor down
* Returns 1 if at bottom, 0 otherwise
*/
#pragma code-name (push, "LC")
uint8_t cursor_down(void) {
uint8_t i;
if (cursrow == NROWS - 1)
scroll_down();
if ((get_gapbuf(gapend + rowlen[cursrow] - curscol) != EOL) &&
(rowlen[cursrow] != NCOLS))
return 1; // Last line
for (i = 0; i < rowlen[cursrow] - curscol; ++i) {
if (gapend < BUFSZ - 1) {
set_gapbuf(gapbegin++, get_gapbuf(++gapend));
if (mode == SEL_SELECT) {
revers(gapbegin > startsel ? 1 : 0);
cputc(get_gapbuf(gapbegin - 1));
}
}
else {
beep();
return 1;
}
}
++cursrow;
// Short line ...
if (curscol > rowlen[cursrow] - 1)
curscol = rowlen[cursrow] - 1;
gotoxy(0, cursrow);
for (i = 0; i < curscol; ++i) {
if (gapend < BUFSZ - 1) {
set_gapbuf(gapbegin++, get_gapbuf(++gapend));
if (mode == SEL_SELECT) {
revers(gapbegin > startsel ? 1 : 0);
cputc(get_gapbuf(gapbegin - 1));
}
}
}
if (mode == SEL_SELECT) {
endsel = gapbegin;
}
revers(0);
gotoxy(curscol, cursrow);
return 0;
}
#pragma code-name (pop)
/*
* Goto beginning of line
*/
void goto_bol(void) {
while (curscol > 0)
cursor_left();
}
/*
* Goto end of line
*/
void goto_eol(void) {
while (curscol < rowlen[cursrow] - 1)
cursor_right();
}
/*
* Word left
*/
void word_left(void) {
do {
cursor_left();
} while ((get_gapbuf(gapbegin) != ' ') && (get_gapbuf(gapbegin) != EOL) &&
(gapbegin > 0));
}
/*
* Word right
*/
void word_right(void) {
do {
cursor_right();
} while ((get_gapbuf(gapbegin) != ' ') && (get_gapbuf(gapbegin) != EOL) &&
(gapend < BUFSZ - 1));
}
/*
* Jump forward 15 screen lines
*/
void page_down(void) {
uint8_t i;
for (i = 0; i < 15; ++i)
if (cursor_down() == 1)
break;
}
/*
* Jump back 15 screen lines
*/
void page_up(void) {
uint8_t i;
for (i = 0; i < 15; ++i)
if (cursor_up() == 1)
break;
}
/*
* Perform word-wrapping on current paragraph
* addbreaks - if 1, add breaks to do word wrap, otherwise it 'unwraps'
* (ie: removes all carriage returns in paragraph)
*/
void word_wrap_para(uint8_t addbreaks) {
uint16_t i = gapbegin;
uint8_t rets = 0, col = 0;
uint16_t startpara = 0;
// Find start of paragraph ("\r\r" delimiter)
while (i > 0) {
--i;
if (get_gapbuf(i) == '\r')
++rets;
else
rets = 0;
if (rets == 2) {
startpara = i + 2;
break;
}
}
// Iterate through para, up to the cursor
i = startpara;
while (i < gapbegin) {
if (get_gapbuf(i) == '\r')
set_gapbuf(i, ' ');
++col;
if (addbreaks && (col == 76)) {
// Backtrack to find a space
while ((get_gapbuf(i) != ' ') && (i > startpara))
--i;
if (i == startpara) {
beep();
return;
}
set_gapbuf(i, '\r'); // Break line
col = 0;
}
++i;
}
}
/*
* Help screen
* EDITHELP.TXT is expected to contain lines of exactly 80 chars
*/
void help(uint8_t num) {
FILE *fp;
char *p;
char c;
uint16_t i, s;
uint8_t cont;
revers(0);
cursor(0);
clrscr();
snprintf(iobuf, 80, "EDITHELP%u.TXT", num);
fp = fopen(iobuf, "rb");
if (!fp) {
printf("Can't open help file\n\n");
goto done;
}
#ifdef AUXMEM
cutbuflen = 0;
p = iobuf;
#else
p = gapbuf + gapend - IOSZ; // Read to just before gapend
#endif
do {
if (FREESPACE() < IOSZ) {
beep();
goto done;
}
s = fread(p, 1, IOSZ, fp);
cont = (s == IOSZ ? 1 : 0);
for (i = 0; i < s; ++i) {
c = p[i];
if (c == '{')
printf("%s", openapple);
else if (c == '}')
printf("%s", closedapple);
else if ((c != '\r') && (c != '\n'))
putchar(c);
}
} while (cont);
done:
fclose(fp);
}
/*
* Load EMAIL.SYSTEM to $2000 and jump to it
*/
void load_email(void) {
revers(0);
clrscr();
exec("EMAIL.SYSTEM", NULL); // Assume it is in current directory
}
/*
* Load ATTACHER.SYSTEM to $2000 and jump to it
*/
void load_attacher(void) {
revers(0);
clrscr();
exec("ATTACHER.SYSTEM", filename); // Assume it is in current directory
}
/*
* Save file to disk, handle user interface
*/
void save(void) {
uint8_t rc;
FILE *fp;
if (strlen(filename) == 0) {
status[1] = 1; // Prompt if save will overwrite existing file
snprintf(userentry, 80,
"[%03u] *UNSAVED CHANGES* File to save", l_auxbank);
if (prompt_for_name(userentry, 1) == 255)
return; // If ESC pressed
if (strlen(userentry) == 0)
return;
strcpy(filename, userentry);
}
// If status[1] is set, check for overwrite
if (status[1]) {
fp = fopen(filename, "r");
if (fp) {
fclose(fp);
snprintf(userentry, 80, "File '%s' exists, overwrite", filename);
if (prompt_okay(userentry) != 0)
return;
}
fclose(fp);
}
#ifdef AUXMEM
rc = save_multibank_file();
#else
rc = save_file(0, 0);
#endif
switch (rc) {
case 0: // Success
status[1] = 0; // No need to prompt for overwrite next time
set_modified(0);
break;
case 1: // Save error
snprintf(userentry, 80, "Can't save '%s'", filename);
show_error(userentry);
break;
}
}
/*
* Perform replace part of search/replace
* pos - position where search term was found
* r - if 0 then perform replace operation
* ask - if 1 then prompt for each replacement
* Returns 1 if search should continue, 0 otherwise
*/
uint8_t finish_search_replace(uint16_t pos, uint8_t r, uint8_t ask) {
uint8_t i;
mode = SEL_NONE;
jump_pos(pos);
startsel = gapend + 1;
endsel = gapend + 1 + strlen(search);
draw_screen();
if (r == 0) { // Replace mode
if (ask) {
i = prompt_okay("Replace");
if (i == 1) { // 'n'
cursor_right();
return 1; // Continue
}
if (i == 2) { // ESC
startsel = endsel = 65535U;
return 0; // Abort
}
}
for (i = 0; i < strlen(search); ++i)
delete_char_right();
for (i = 0; i < strlen(replace); ++i)
insert_char(replace[i]);
set_modified(1);
draw_screen();
cursor_right();
return 1; // Continue
}
startsel = endsel = 65535U;
return 0; // Do not continue
}
/*
* Perform search/replace operation
* r - if 0 then perform replace operation
* ask - if 1 then prompt for each replacement
*/
void do_search_replace(uint8_t r, uint8_t ask) {
uint8_t wrapcount = 0;
uint16_t foundpos;
search:
mode = SRCH1; // Searching ..
update_status_line();
set_gapbuf(BUFSZ + 1, '\0'); // NULL term for search_in_gapbuf()
if (search_in_gapbuf(gapend + 1, search, &foundpos) == 0) {
if (wrapcount > 0) {
mode = SEL_NONE;
return; // Wrapped already. Give up.
}
++wrapcount;
mode = SRCH2; // Wrapped ..
update_status_line();
set_gapbuf(gapbegin, '\0'); // NULL term for search_in_gapbuf()
if (search_in_gapbuf(0, search, &foundpos) == 0) {
mode = SRCH3; // Not found ..
return;
}
if (finish_search_replace(foundpos, r, ask) == 1)
goto search;
mode = SEL_NONE;
return;
}
if (finish_search_replace(gapbegin + foundpos - (gapend + 1), r, ask) == 1)
goto search;
mode = SEL_NONE;
}
/*
* Disconnect RAM disk /RAM
*/
void disconnect_ramdisk(void) {
uint8_t i, j;
uint8_t *devcnt = (uint8_t*)0xbf31; // Number of devices
uint8_t *devlst = (uint8_t*)0xbf32; // Disk device numbers
uint16_t *s0d1 = (uint16_t*)0xbf10; // s0d1 driver vector
uint16_t *s3d2 = (uint16_t*)0xbf26; // s3d2 driver vector
if (*s0d1 == *s3d2)
return; // No /RAM connected
for (i = *devcnt; i > 0; --i) {
if ((devlst[i] == 0xbf) || (devlst[i] == 0xbb) ||
(devlst[i] == 0xb7) || (devlst[i] == 0xb3))
break;
}
if (i > 0) {
for (j = i; j < *devcnt; ++j) {
devlst[j] = devlst[j + 1];
}
}
*s3d2 = *s0d1;
--(*devcnt);
}
/*
* Available aux banks. Taken from RamWorks III Manual p47
* banktbl is populated as follows:
* First byte is number of banks
* Following bytes are the logical bank numbers in physical bank order
* Final byte is $ff terminator
*/
void avail_aux_banks(void) {
__asm__("sta $c009"); // Store in ALTZP
__asm__("ldy #$7f"); // Maximum valid bank
findbanks:
__asm__("sty $c073"); // Select bank
__asm__("sty $00"); // Store bank num in ALTZP
__asm__("tya");
__asm__("eor #$ff");
__asm__("sta $01"); // Store the inverse in ALTZP too
__asm__("dey");
__asm__("bpl %g", findbanks);
// Read back the bytes we wrote to find valid banks
__asm__("lda #$00");
__asm__("tay");
__asm__("tax");
findthem:
__asm__("sty $c073"); // Select bank
__asm__("sta $c076"); // Why?
__asm__("cpy $00");
__asm__("bne %g", notone);
__asm__("tya");
__asm__("eor #$ff");
__asm__("cmp $01");
__asm__("bne %g", notone);
__asm__("inx");
__asm__("tya");
__asm__("sta %v,x", banktbl);
__asm__("cpx #128"); // 8MB max
__asm__("bcs %g", done);
notone: // 'not one', not 'no tone' !
__asm__("iny");
__asm__("bpl %g", findthem);
done:
__asm__("lda #$00");
__asm__("sta $c073"); // Back to aux bank 0
__asm__("sta $c008"); // Turn off ALTZP
__asm__("stx %v", banktbl); // Number of banks
__asm__("lda #$ff");
__asm__("inx");
__asm__("sta %v,x", banktbl); // Terminator
}
/*
* Initialize the data at 0x200 in each aux bank so that all buffers
* are empty, unmodified and without a filename
*/
void init_aux_banks(void) {
uint8_t i;
uint16_t count;
revers(1);
cprintf("EDIT.SYSTEM Bobbi 2020");
revers(0);
cprintf("\n\n\n %u x 64KB aux banks -> %uKB\n", banktbl[0], banktbl[0]*64);
for (i = 1; i <= banktbl[0]; ++i) {
auxbank = bank_log_to_phys(i);
// Saves filename[], gapbegin, gapend and modified (BUFINFOSZ bytes)
__asm__("lda %v", auxbank);
__asm__("sta $c073"); // Set aux bank
copyaux(filename, (void*)0x0200, BUFINFOSZ, TOAUX);
}
auxbank = 0;
l_auxbank = 1;
__asm__("lda #$00");
__asm__("sta $c073"); // Set aux bank back to 0
for (count = 0; count < 10000; ++count); // Delay so user can read message
}
/*
* Generate buffer list
*/
#ifdef AUXMEM
#pragma code-name (push, "LC")
void buffer_list(void) {
uint8_t o_aux = l_auxbank, row = 0;
uint8_t i;
cursor(0);
for (i = 1; i <= banktbl[0]; ++i) {
if (row == 0) {
clrscr();
cprintf(" Buf Size Mod Part Filename\r");
gotoxy(0, ++row);
}
change_aux_bank(i);
if (DATASIZE() > 0) {
cprintf("[%03u] %05u | %c | %3u | %s\r",
i, DATASIZE(), (status[0] ? '*' : ' '), status[2], filename);
gotoxy(0, ++row);
}
if (row == 22) {
cprintf("[Press Any Key]");
cgetc();
row = 0;
}
}
change_aux_bank(o_aux);
gotoxy(0, 23);
cprintf("[Press Any Key]");
cgetc();
}
#pragma code-name (pop)
#endif
/*
* Rename a file, taking care of multi-bank files
*/
void name_file(void) {
uint8_t bank = find_first_bank();
uint8_t origbank = l_auxbank;
uint8_t retval = 0, modified = 0, first = 1;
uint8_t filebank;
if (prompt_for_name("New filename", 1) == 255)
return; // ESC pressed
if (strlen(userentry) == 0)
return;
if (bank != origbank)
change_aux_bank(bank);
if (status[2] == 0) { // Oh, it's actually just a single bank file
strcpy(filename, userentry);
status[1] = 1; // Should prompt if overwriting file on save
return;
}
if (status[2] != 1) {
show_error("SBF error"); // Should never happen
return;
}
do {
filebank = status[2];
strcpy(filename, userentry);
status[1] = 1; // Should prompt if overwriting file on save
change_aux_bank(++l_auxbank);
} while (status[2] == filebank + 1);
change_aux_bank(origbank);
update_status_line();
}
/*
* Save all modified buffers
*/
#ifdef AUXMEM
void save_all(void) {
uint8_t o_aux = l_auxbank;
uint8_t i;
cursor(0);
for (i = 1; i <= banktbl[0]; ++i) {
change_aux_bank(i);
if (status[0]) { // If buffer is modified
if (strlen(filename) > 0)
snprintf(userentry, 80, "Save '%s'", filename);
else
strcpy(userentry, "Save <scratch> buffer");
if (prompt_okay(userentry) != 0)
continue;
draw_screen();
save();
}
}
change_aux_bank(o_aux);
}
#endif
/*
* Sort startsel / endsel in ascending order to allow backwards selection
*/
void order_selection(void) {
uint16_t tmp;
if (startsel > endsel) {
tmp = endsel;
endsel = startsel;
startsel = tmp;
}
}
/*
* Main editor routine
*/
int edit(char *fname) {
char c;
uint16_t position, tmp;
uint8_t i, ask;
videomode(VIDEOMODE_80COL);
if (fname) {
strcpy(filename, fname);
cprintf("Loading file %s ", filename);
if (load_file(filename, 1)) {
snprintf(userentry, 80, "Can't load '%s'", filename);
show_error(userentry);
strcpy(filename, "");
}
}
draw_screen();
while (1) {
cursor(1);
c = cgetc();
if (mode == SRCH3) // Reset 'Not found'
mode = SEL_NONE;
switch (c) {
case ESC: // Escape from block mode operations
startsel = endsel = 65535U;
mode = SEL_NONE;
draw_screen();
break;
case 0x80 + '1': // Top
jump_pos(0);
draw_screen();
break;
case 0x80 + '2':
jump_pos(DATASIZE() / 8);
draw_screen();
break;
case 0x80 + '3':
jump_pos(2L * DATASIZE() / 8);
draw_screen();
break;
case 0x80 + '4':
jump_pos(3L * DATASIZE() / 8);
draw_screen();
break;
case 0x80 + '5':
jump_pos(4L * DATASIZE() / 8);
draw_screen();
break;
case 0x80 + '6':
jump_pos(5L * DATASIZE() / 8);
draw_screen();
break;
case 0x80 + '7':
jump_pos(6L * DATASIZE() / 8);
draw_screen();
break;
case 0x80 + '8':
jump_pos(7L * DATASIZE() / 8);
draw_screen();
break;
case 0x80 + '9': // Bottom
jump_pos(DATASIZE());
draw_screen();
break;
case 0x80 + 0x08: // OA-Left "Word left"
word_left();
break;
case 0x80 + 0x15: // OA-Right "Word right"
word_right();
break;
case 0x80 + ',': // OA-< "Home"
case 0x80 + '<':
case 0x01: // Ctrl-A (Emacs style)
goto_bol();
break;
case 0x80 + '.': // OA-> "End"
case 0x80 + '>':
case 0x05: // Ctrl-E (Emacs style)
goto_eol();
break;
case 0x8b: // OA-Up "Page Up"
page_up();
break;
case 0x8a: // OA-Down "Page Down"
page_down();
break;
case 0x80 + ' ': // OA-SPACE start/end selection
tmp = (startsel == 65535U ? 0 : 1); // Prev selection active?
if (tmp) {
endsel = gapbegin;
mode = SEL_NONE;
draw_screen();
} else {
startsel = endsel = gapbegin;
mode = SEL_SELECT;
update_status_line();
}
break;
case 0x80 + 'X': // OA-X "Cut"
case 0x80 + 'x': // OA-x
case 0x18: // ^X "Cut"
tmp = 65535U;
case 0x80 + 'C': // OA-C "Copy"
case 0x80 + 'c': // OA-c
case 0x03: // ^C "Copy"
++tmp;
mode = SEL_NONE;
if (startsel == 65535U) { // No selection
beep();
break;
}
order_selection();
position = gapbegin;
#ifdef AUXMEM
if (endsel - startsel <= CUTBUFSZ) {
cutbuflen = endsel - startsel;
jump_pos(startsel);
__asm__("lda %v", auxbank);
__asm__("sta $c073"); // Set aux bank
copyaux((char*)0x0800 + gapend + 1, iobuf, cutbuflen, FROMAUX);
__asm__("lda #$00");
__asm__("sta $c073"); // Set aux bank back to 0
} else {
cutbuflen = 0;
#endif
if (save_file(1, 0) == 1) {
show_error("Can't save CLIPBOARD");
draw_screen();
break;
}
#ifdef AUXMEM
}
#endif
if (tmp == 0) { // Cut
jump_pos(startsel);
gapend += (endsel - startsel);
set_modified(1);
} else // Copy
jump_pos(position);
startsel = endsel = 65535U;
draw_screen();
break;
case 0x80 + 'V': // OA-V "Paste"
case 0x80 + 'v': // OA-v
case 0x16: // ^V "Paste"
mode = SEL_NONE;
if (cutbuflen > 0) {
__asm__("lda %v", auxbank);
__asm__("sta $c073"); // Set aux bank
copyaux(iobuf, (char*)0x0800 + gapbegin, cutbuflen, TOAUX);
__asm__("lda #$00");
__asm__("sta $c073"); // Set aux bank back to 0
gapbegin += cutbuflen;
} else {
if (load_file("CLIPBOARD", 0))
show_error("Can't open CLIPBOARD");
}
startsel = endsel = 65535U;
draw_screen();
break;
case 0x80 + 'R': // OA-R "Replace"
case 0x80 + 'r': // OA-r
tmp = 65535U;
case 0x80 + 'F': // OA-F "Find"
case 0x80 + 'f': // OA-F "Find"
++tmp;
snprintf(userentry, 80, "Find (%s)", search);
if (prompt_for_name(userentry, 0) == 255)
break; // ESC pressed
if (strlen(userentry) > 0)
strcpy(search, userentry);
else if (strlen(search) == 0)
break;
cursor_right();
if (tmp == 0) { // Replace mode
snprintf(userentry, 80, "Replace (%s)", replace);
if (prompt_for_name(userentry, 0) == 255)
break; // ESC pressed
if (strlen(userentry) > 0)
strcpy(replace, userentry);
else if (strlen(replace) == 0)
break;
ask = 0;
if (prompt_okay("Ask for each") == 0)
ask = 1;
}
do_search_replace(tmp, ask);
update_status_line();
break;
case 0x80 + 'I': // OA-I "Insert file"
case 0x80 + 'i':
if (prompt_for_name("File to insert", 1) == 255)
break; // ESC pressed
if (strlen(userentry) == 0)
break;
if (load_file(userentry, 0)) {
snprintf(iobuf, 80, "Can't open '%s'", userentry);
show_error(iobuf);
}
draw_screen();
break;
case 0x80 + 'O': // OA-O "Open"
case 0x80 + 'o':
if (status[0])
save();
if (prompt_for_name("File to open", 1) == 255)
break; // ESC pressed
if (strlen(userentry) == 0)
break;
strcpy(filename, userentry);
if (load_file(filename, 1)) {
snprintf(userentry, 80, "Can't open '%s'", filename);
show_error(userentry);
strcpy(filename, "");
}
draw_screen();
break;
case 0x80 + 'N': // OA-N "Name"
case 0x80 + 'n': // OA-n
name_file();
update_status_line();
break;
case 0x80 + 'Q': // OA-Q "Quit"
case 0x80 + 'q': // OA-q
save_all();
if (quit_to_email) {
if (prompt_okay("Add attachments") == 0)
load_attacher();
if (prompt_okay("Quit to EMAIL") == 0)
load_email();
} else {
if (prompt_okay("Quit to ProDOS") == 0) {
revers(0);
clrscr();
exit(0);
}
}
break;
case 0x80 + 'U': // OA-U "Unwrap"
case 0x80 + 'u': // OA-w
word_wrap_para(0);
draw_screen();
break;
case 0x80 + 'W': // OA-W "Wrap"
case 0x80 + 'w': // OA-w
word_wrap_para(1);
draw_screen();
break;
case 0x80 + 'S': // OA-S "Save"
case 0x80 + 's': // OA-s
save();
draw_screen();
break;
case 0x80 + DELETE: // OA-Backspace
case 0x04: // Ctrl-D "DELETE"
if (mode == SEL_NONE) {
delete_char_right();
update_after_delete_char_right();
set_modified(1);
}
break;
case 0x80 + '?': // OA-? "Help"
help1:
help(1);
c = cgetc();
switch (c) {
case 'q':
case 'Q':
goto donehelp;
}
help(2);
c = cgetc();
switch (c) {
case 0x0b: // Up
case 'p':
case 'P':
goto help1;
}
donehelp:
draw_screen();
break;
case 0x0c: // Ctrl-L "REFRESH"
draw_screen();
break;
case DELETE: // DEL "BACKSPACE"
if (mode == SEL_NONE) {
delete_char();
update_after_delete_char();
set_modified(1);
} else if (mode == SEL_SELECT) {
tmp = (startsel == 65535U ? 0 : 1); // Selection active?
if (!tmp) {
beep();
break;
}
snprintf(userentry, 80,
"Delete selection (%d chars)", abs(endsel - startsel));
if (prompt_okay(userentry) != 0)
break;
order_selection();
mode = SEL_NONE;
jump_pos(startsel);
gapend += (endsel - startsel);
set_modified(1);
startsel = endsel = 65535U;
draw_screen();
break;
}
break;
case 0x09: // Tab
if (mode == SEL_NONE) {
c = next_tabstop(curscol) - curscol;
for (i = 0; i < c; ++i) {
insert_char(' ');
update_after_insert_char();
}
set_modified(1);
}
break;
case 0x08: // Left
cursor_left();
break;
case 0x15: // Right
cursor_right();
break;
case 0x0b: // Up
cursor_up();
break;
case 0x0a: // Down
cursor_down();
break;
case EOL: // Return
if ((mode == SEL_NONE) || (mode == SEL_SELECT)) {
insert_char(c);
update_after_insert_char();
set_modified(1);
}
break;
default:
#ifdef AUXMEM
if (*(uint8_t*)0xc062 & 0x80) { // Closed Apple depressed
// CA-number (1-9) - quick jump to first 9 buffers
if ((c >= '1') && (c <= '9')) {
change_aux_bank(c - '0');
startsel = endsel = 65535U;
draw_screen();
} else if ((c == 'B') || (c == 'b')) { // CA-B "Buffer"
snprintf(userentry, 80, "Buffer # (1 - %u)", banktbl[0]);
if (prompt_for_name(userentry, 0) == 255) {
update_status_line();
break;
}
if (strlen(userentry) == 0) {
update_status_line();
break;
}
tmp = atoi(userentry);
if ((tmp < 1) || (tmp > banktbl[0])) {
beep();
update_status_line();
break;
}
change_aux_bank(tmp);
startsel = endsel = 65535U;
draw_screen();
} else if ((c == 'E') || (c == 'e')) { // CA-E "Extend file"
i = status[2];
if (i == 0) // If this was single buf file, make it part 1
i = 1;
if (open_new_aux_bank(i) == 1) {
snprintf(userentry, 80,
"Buffer [%03u] not avail. Can't extend.", l_auxbank + 1);
show_error(userentry);
break;
}
status[2] = i + 1;
draw_screen();
} else if ((c == 'L') || (c == 'l')) {
buffer_list();
draw_screen();
} else if ((c == 'T') || (c == 't')) { // CA-T "Truncate file"
if (prompt_okay("Truncate file here") == 0) {
tmp = l_auxbank;
gapend = BUFSZ - 1;
draw_screen();
if (status[2] > 0) { // If multipart
if (status[2] == 1) // Truncating in first bank
status[2] = 0; // Make it a singleton
change_aux_bank(++l_auxbank);
do {
gapbegin = 0;
gapend = BUFSZ - 1;
filename[0] = '\0';
i = status[2];
status[0] = status[1] = status[2] = 0;
change_aux_bank(++l_auxbank);
} while (status[2] == i + 1);
change_aux_bank(tmp);
}
}
} else if ((c =='S') || (c == 's')) { // CA-S "Save all"
save_all();
draw_screen();
}
}
else if ((c >= 0x20) && (c < 0x80) && (mode == SEL_NONE)) {
#else
if ((c >= 0x20) && (c < 0x80) && (mode == SEL_NONE)) {
#endif
insert_char(c);
update_after_insert_char();
set_modified(1);
}
}
}
}
void main(int argc, char *argv[]) {
#ifdef AUXMEM
uint8_t *pp = (uint8_t*)0xbf98;
if (!(*pp & 0x02)) {
printf("Need 80 cols");
return;
}
if ((*pp & 0x30) != 0x30) {
printf("Need 128K");
return;
}
disconnect_ramdisk();
avail_aux_banks();
init_aux_banks();
#endif
if (argc == 2) {
quit_to_email = 1;
edit(argv[1]);
} else {
quit_to_email = 0;
edit(NULL);
}
}
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