Some infrastructure hexedit needs. (Poor man's curses.)

1 files changed, 0 insertions, 250 deletions

diff --git a/toys/pending/hexedit.c b/toys/pending/hexedit.c
deleted file mode 100644
index 668e51c4..00000000
--- a/toys/pending/hexedit.c
+++ /dev/null
@@ -1,250 +0,0 @@
-/* hexedit.c - Hexadecimal file editor
- *
- * Copyright 2015 Rob Landley <rob@landley.net>
- *
- * No standard
-
-USE_HEXEDIT(NEWTOY(hexedit, "<1>1r", TOYFLAG_USR|TOYFLAG_BIN))
-
-config HEXEDIT
-  bool "hexedit"
-  default n
-  help
-    usage: hexedit FILENAME
-
-    Hexadecimal file editor.
-
-    -r	Read only (display but don't edit)
-*/
-
-#define FOR_hexedit
-#include "toys.h"
-
-GLOBALS(
-  char *data;
-  long long len, base;
-  int numlen;
-  unsigned height;
-)
-
-static void esc(char *s)
-{
-  printf("\033[%s", s);
-}
-
-static void jump(int x, int y)
-{
-  char s[32];
-
-  sprintf(s, "%d;%dH", y+1, x+1);
-  esc(s);
-}
-
-static void fix_terminal(void)
-{
-  set_terminal(1, 0, 0);
-  esc("?25h");
-  esc("0m");
-  jump(0, 999);
-}
-
-static void sigttyreset(int i)
-{
-  fix_terminal();
-  // how do I re-raise the signal so it dies with right signal info for wait()?
-  _exit(127);
-}
-
-// Render all characters printable, using color to distinguish.
-static void draw_char(char broiled)
-{
-  if (broiled<32 || broiled>=127) {
-    if (broiled>127) {
-      esc("2m");
-      broiled &= 127;
-    }
-    if (broiled<32 || broiled==127) {
-      esc("7m");
-      if (broiled==127) broiled = 32;
-      else broiled += 64;
-    }
-    printf("%c", broiled);
-    esc("0m");
-  } else printf("%c", broiled);
-}
-
-static void draw_line(long long yy)
-{
-  int x;
-
-  yy = (TT.base+yy)*16;
-
-  if (yy<TT.len) {
-    printf("\r%0*llX ", TT.numlen, yy);
-    for (x=0; x<16; x++) {
-      if (yy+x<TT.len) printf(" %02X", TT.data[yy+x]);
-      else printf("   ");
-    }
-    printf("  ");
-    for (x=0; x<16; x++) draw_char(TT.data[yy+x]);
-  }
-  esc("K");
-}
-
-static void draw_page(void)
-{
-  int y;
-
-  jump(0, 0);
-  for (y = 0; y<TT.height; y++) {
-    if (y) printf("\r\n");
-    draw_line(y);
-  }
-}
-
-// side: 0 = editing left, 1 = editing right, 2 = clear, 3 = read only
-static void highlight(int xx, int yy, int side)
-{
-  char cc = TT.data[16*(TT.base+yy)+xx];
-  int i;
-
-  // Display cursor
-  jump(2+TT.numlen+3*xx, yy);
-  esc("0m");
-  if (side!=2) esc("7m");
-  if (side>1) printf("%02X", cc);
-  else for (i=0; i<2;) {
-    if (side==i) esc("32m");
-    printf("%X", (cc>>(4*(1&++i)))&15);
-  }
-  esc("0m");
-  jump(TT.numlen+17*3+xx, yy);
-  draw_char(cc);
-}
-
-#define KEY_UP 256
-#define KEY_DOWN 257
-#define KEY_RIGHT 258
-#define KEY_LEFT 259
-#define KEY_PGUP 260
-#define KEY_PGDN 261
-#define KEY_HOME 262
-#define KEY_END  263
-#define KEY_INSERT 264
-
-void hexedit_main(void)
-{
-  // up down right left pgup pgdn home end ins
-  char *keys[] = {"\033[A", "\033[B", "\033[C", "\033[D", "\033[5~", "\033[6~",
-                  "\033OH", "\033OF", "\033[2~", 0};
-  long long pos;
-  int x, y, i, side = 0, key, ro = toys.optflags&FLAG_r,
-      fd = xopen(*toys.optargs, ro ? O_RDONLY : O_RDWR);
-
-  TT.height = 25;
-  terminal_size(0, &TT.height);
-  if (TT.height) TT.height--;
-  sigatexit(sigttyreset);
-  esc("0m");
-  esc("?25l");
-  fflush(0);
-  set_terminal(1, 1, 0);
-
-  if ((TT.len = fdlength(fd))<0) error_exit("bad length");
-  if (sizeof(long)==32 && TT.len>SIZE_MAX) TT.len = SIZE_MAX;
-  // count file length hex digits, rounded up to multiple of 4
-  for (pos = TT.len, TT.numlen = 0; pos; pos >>= 4, TT.numlen++);
-  TT.numlen += (4-TT.numlen)&3;
-
-  TT.data = mmap(0, TT.len, PROT_READ|(PROT_WRITE*!ro), MAP_SHARED, fd, 0);
-
-  draw_page();
-
-  y = x = 0;
-  for (;;) {
-    // Get position within file, trimming if we overshot end.
-    pos = 16*(TT.base+y)+x;
-    if (pos>=TT.len) {
-      pos = TT.len-1;
-      x = (TT.len-1)%15;
-    }
-
-    // Display cursor
-    highlight(x, y, ro ? 3 : side);
-    fflush(0);
-
-    // Wait for next key
-    key = scan_key(toybuf, keys, 1);
-    // Exit for q, ctrl-c, ctrl-d, escape, or EOF
-    if (key==-1 || key==3 || key==4 || key==27 || key=='q') break;
-    highlight(x, y, 2);
-
-    if (key>='a' && key<='f') key-=32;
-    if (!ro && ((key>='0' && key<='9') || (key>='A' && key<='F'))) {
-      i = key - '0';
-      if (i>9) i -= 7;
-      TT.data[pos] &= 15<<(4*side);
-      TT.data[pos] |= i<<(4*!side);
-
-      highlight(x, y, ++side);
-      if (side==2) {
-        side = 0;
-        if (++pos<TT.len && ++x==16) {
-          x = 0;
-          if (++y == TT.height) {
-            --y;
-            goto down;
-          }
-        }
-      }
-    }
-    if (key>255) side = 0;
-    if (key==KEY_UP) {
-      if (--y<0) {
-        if (TT.base) {
-          TT.base--;
-          esc("1T");
-          jump(0, TT.height);
-          esc("K");
-          jump(0, 0);
-          draw_line(0);
-        }
-        y = 0;
-      }
-    } else if (key==KEY_DOWN) {
-      if (y == TT.height-1 && pos+32<TT.len) {
-down:
-        TT.base++;
-        esc("1S");
-        jump(0, TT.height-1);
-        draw_line(TT.height-1);
-      }
-      if (pos+16<TT.len && ++y>=TT.height) y--;
-    } else if (key==KEY_RIGHT) {
-      if (x<15 && pos+1<TT.len) x++;
-    } else if (key==KEY_LEFT) {
-      if (x) x--;
-    } else if (key==KEY_PGUP) {
-      TT.base -= TT.height;
-      if (TT.base<0) TT.base = 0;
-      draw_page();
-    } else if (key==KEY_PGDN) {
-      TT.base += TT.height;
-      if ((TT.base*16)>=TT.len) TT.base=(TT.len-1)/16;
-      while ((TT.base+y)*16>=TT.len) y--;
-      if (16*(TT.base+y)+x>=TT.len) x = (TT.len-1)&15;
-      draw_page();
-    } else if (key==KEY_HOME) {
-      TT.base = 0;
-      x = 0;
-      draw_page();
-    } else if (key==KEY_END) {
-      TT.base=(TT.len-1)/16;
-      x = (TT.len-1)&15;
-      draw_page();
-    }
-  }
-  munmap(TT.data, TT.len);
-  close(fd);
-  fix_terminal();
-}