2022-11-24 14:37:21 +01:00
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/*
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+----------------+
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| Ascii View |
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+----------------+
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include "hexdiff.h"
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/*----------------------------------------------------------------*/
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static void av_sauve_contexte(void)
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{ /* code to be defined ? */ }
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/*----------------------------------------------------------------*/
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static void av_restaure_contexte(void)
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{ /* code to be defined ? */ }
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/*----------------------------------------------------------------*/
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static char * ascii_name(int code)
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{
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static char static_buffer[20];
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/* XXX this big switch must be audited.... */
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switch (code)
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{
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case 0: return "NUL";
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case 1: return "SOH ^a";
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case 2: return "STX ^b";
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case 3: return "ETX ^c";
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case 4: return "EOT ^d";
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case 5: return "ENQ ^e";
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case 6: return "ACQ ^f";
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case 7: return "BEL ^g";
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case 8: return "BS ^h";
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case 9: return "HT ^i";
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case 10: return "LF ^j";
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case 11: return "VT ^k";
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case 12: return "FF ^l";
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case 13: return "CR ^m";
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case 14: return "SO ^n";
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case 15: return "SI ^o";
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case 16: return "DLE ^p";
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case 17: return "DC1 ^q";
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case 18: return "DC2 ^r";
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case 19: return "DC3 ^s";
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case 20: return "DC4 ^t";
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case 21: return "NAK ^u";
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case 22: return "SYN ^v";
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case 23: return "ETB ^w";
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case 24: return "CAN ^x";
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case 25: return "EM ^y";
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case 26: return "SUB ^z";
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case 27: return "ESC";
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case 28: return "FS ";
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case 29: return "GS ";
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case 30: return "RS ";
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case 31: return "US ";
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case 32: return "SPACE";
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case 127: return "DEL";
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}
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if (code < 128)
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{
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sprintf(static_buffer, "'%c'", code);
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return static_buffer;
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}
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/* may be for code > 127, we can put the "html" code &blabla; ? */
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return "";
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}
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/*----------------------------------------------------------------*/
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#define ASCV_I2LIG(idx) ((idx)>>6)
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#define ASCV_I2COL(idx) ((idx)&63)
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static int av_affiche(Fichier *fic, WINDOW *pop, int clig, int ccol)
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{
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int foo, lig, col, car;
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char chaine[100];
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long depl;
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unsigned char octet;
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wstandout(pop);
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for (foo=1; foo<65; foo++)
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mvwaddch(pop, 1, foo, ' ');
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mvwaddstr(pop, 1, 2, fic->nom);
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depl = (clig*64)+ccol;
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octet = fic->buffer[depl];
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sprintf(chaine, "%7ld : %3d 0x%02x 0%03o",
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fic->offset+depl, octet, octet, octet);
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mvwaddstr(pop, 18, 1, chaine);
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mvwaddstr(pop, 18, 33, " ");
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mvwaddstr(pop, 18, 33, ascii_name(fic->buffer[depl]));
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wstandend(pop);
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for (foo=0; foo<16*64; foo++)
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{
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lig = ASCV_I2LIG(foo);
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col = ASCV_I2COL(foo);
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car = fic->buffer[foo];
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car = is_printable(car) ? car : ' ';
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if (clig==lig && ccol==col)
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wstandout(pop);
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mvwaddch(pop, lig+2, col+1, car);
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if (clig==lig && ccol==col)
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wstandend(pop);
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}
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/* put the cursor at the current location */
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/* this was a really bad idea for Xterm users, because
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* current pos char was written in "standout", and the
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* text cursor of xterm re-reverse it.
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* XXX wmove(pop, clig+2, ccol+1);
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*/
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wmove(pop,1,64);
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wrefresh(pop);
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return 0;
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}
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/*----------------------------------------------------------------*/
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/* new: 2004 Nov.
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* still in developement.
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*/
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int asciiview(void)
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{
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WINDOW * popup;
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int foo, key, flag_exit;
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int clig, ccol; /* position du curseur */
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Fichier * fic;
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av_sauve_contexte();
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popup = newwin(21, 66, 3, 5);
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bordure(popup);
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wstandout(popup);
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for (foo=1; foo<65; foo++)
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mvwaddch(popup, 19, foo, ' ');
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mvwaddstr(popup, 19, 1, " 'Q' quit, <tab> see other file");
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for (foo=1; foo<65; foo++)
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mvwaddch(popup, 18, foo, ' ');
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wstandend(popup);
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wrefresh(popup);
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flag_exit = 0;
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clig = ccol = 0;
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do
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{
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if (fenetre_active==0) fic = &f1;
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else fic = &f2;
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av_affiche(fic, popup, clig, ccol);
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key = getch();
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switch (key)
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{
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case 'q': case 'Q':
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flag_exit = 1;
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break;
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case '\t':
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fenetre_active ^= 1;
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break;
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case KEY_UP:
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2023-10-23 14:13:17 +02:00
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if (clig>0) clig--;
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break;
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2022-11-24 14:37:21 +01:00
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case KEY_DOWN:
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2023-10-23 14:13:17 +02:00
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if (clig<15) clig++;
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break;
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2022-11-24 14:37:21 +01:00
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case KEY_LEFT:
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if (ccol>0) ccol--;
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else if (clig>0)
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{
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/* go to the previous line */
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ccol=63; clig--;
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}
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break;
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case KEY_RIGHT:
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if (ccol<63) ccol++;
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else if (clig<15)
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{
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/* go to the next line */
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ccol=0; clig++;
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}
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break;
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case KEY_HOME:
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ccol = clig = 0; break;
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case KEY_END:
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ccol = 63; clig = 15; break;
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default:
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flash();
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break;
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}
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} while ( ! flag_exit );
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delwin(popup);
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av_restaure_contexte();
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return 42;
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}
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/*----------------------------------------------------------------*/
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/*----------------------------------------------------------------*/
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