error handling and proper death function
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@ -1,6 +1,8 @@
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#ifndef _EDITOR_CONFIG_H_
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#define _EDITOR_CONFIG_H_
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#define FRONTEND_NCURSES
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#define TABSIZE 4 // Tab size as used in render
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#define MAX_LINE 1024 // maximum line length on screen
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#define PGK_DELTA 15 // Step of jump
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32
src/die.h
Normal file
32
src/die.h
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@ -0,0 +1,32 @@
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#ifndef _HELPER_DIE_H_
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#define _HELPER_DIE_H_
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#include <stdlib.h>
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#include <stdio.h>
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#ifdef FRONTEND_NCURSES
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#include <ncurses.h>
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#endif
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typedef enum {
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AOK,
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GENERIC_ERR,
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BAD_FILE,
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MALLOC_ERR,
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REALLOC_ERR,
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BAD_PNTR
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} DeathStatus;
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void die (const char *message, DeathStatus sn)
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{
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#ifdef FRONTEND_NCURSES
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erase();
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refresh();
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endwin();
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#endif
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if (sn) perror(message);
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exit(sn);
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}
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#endif
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@ -1,8 +1,18 @@
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#ifndef _FBUFFER_H_
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#define _FBUFFER_H_
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#ifndef _XOPEN_SOURCE
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#define _XOPEN_SOURCE /* See feature_test_macros(7) */
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#endif
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <wchar.h>
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#include "config.h"
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#include "die.h"
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/* Row structure, defines actual and
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* render chars, actual and render size
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* and difference between render and
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@ -43,11 +53,7 @@ int isUtf (int c);
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int isCont (int c);
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int isStart (int c);
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#include "config.h"
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <wchar.h>
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/* Start of function definitions */
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void bufInit (FileBuffer *b)
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{
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@ -60,13 +66,13 @@ void rowAddLast (FileBuffer *b, char *s, int len)
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{
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/* Extend the block of memory containing the lines */
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Row *newr = realloc(b->rw, (b->rownum + 1) * sizeof(Row));
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//if (newr == NULL) termDie("realloc in rowAddLast");
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if (newr == NULL) die("realloc in rowAddLast", REALLOC_ERR);
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b->rw = newr;
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/* Allocate memory for the line and copy it
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* at the current row number */
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b->rw[b->rownum].chars = malloc(len + 1);
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//if (b->rw[b->rownum].chars == NULL) termDie("malloc in rowAddLast chars");
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if (b->rw[b->rownum].chars == NULL) die("malloc in rowAddLast chars", MALLOC_ERR);
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memcpy(b->rw[b->rownum].chars, s, len);
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b->rw[b->rownum].chars[len] = '\0';
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b->rw[b->rownum].size = len;
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@ -81,9 +87,9 @@ void rowAddChar (Row *rw, char c, int pos)
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/* extend the string */
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rw->size++;
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char *t = realloc(rw->chars, rw->size + 1);
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//if (t == NULL) termDie("realloc in rowAddchar");
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rw->chars = t;
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char *tmp = realloc(rw->chars, rw->size + 1);
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if (tmp == NULL) die("realloc in rowAddchar", REALLOC_ERR);
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rw->chars = tmp;
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/* make space for the new char */
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memcpy(&rw->chars[pos + 1], &rw->chars[pos], (rw->size + 1) - (pos + 1));
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@ -131,7 +137,7 @@ void rowAddRow (FileBuffer *b, int pos, int cur) // WIP; TO DOCUMENT
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Row nex = EROW;
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/* allocate a buffer */
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char *s = malloc(len + 1);
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//if (s == NULL) termDie("malloc in rowAddRow s");
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if (s == NULL) die("malloc in rowAddRow s", MALLOC_ERR);
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/* copy the contents of the pos row after the cursor into the buffer */
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memcpy(s, &b->rw[pos].chars[cur], len);
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s[len] = '\0';
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@ -142,7 +148,7 @@ void rowAddRow (FileBuffer *b, int pos, int cur) // WIP; TO DOCUMENT
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/* MAKE THE SPLIT INTO TWO LINES */
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/* shrink the line at pos */
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char *p = realloc(b->rw[pos].chars, cur + 1);
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//if (p == NULL) termDie("realloc in rowAddRow");
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if (p == NULL) die("realloc in rowAddRow", REALLOC_ERR);
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b->rw[pos].chars = p;
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/* and terminate it with null like a good boi */
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b->rw[pos].chars[cur] = '\0';
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@ -173,7 +179,7 @@ void rowCpy (Row *to, Row *from) // WIP
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rowFree(to);
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/* Allocate space for the new string */
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to->chars = (char*) malloc(strlen(from->chars) + 1);
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//if (to->chars == NULL) termDie("malloc in rowCpy");
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if (to->chars == NULL) die("malloc in rowCpy", MALLOC_ERR);
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/* And update the size */
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to->size = from->size;
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/* Then copy the chars from the source row to the destination row */
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@ -187,7 +193,7 @@ void rowAppendString (Row *rw, char *s, int len)
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{
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/* reallocate the row to accomodate for the added string */
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char *temp = realloc(rw->chars, rw->size + len + 1);
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//if (temp == NULL) termDie("realloc in rowAppendString");
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if (temp == NULL) die("realloc in rowAppendString", REALLOC_ERR);
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rw->chars = temp;
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memcpy(&rw->chars[rw->size], s, len);
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@ -209,7 +215,7 @@ void rowDeleteRow (FileBuffer *b, int pos)
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b->rownum--;
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rowFree(&b->rw[b->rownum]);
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Row *temp = realloc(b->rw, sizeof(Row) * b->rownum);
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//if (temp == NULL) termDie("realloc in rowDeleteRow");
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if (temp == NULL) die("realloc in rowDeleteRow", REALLOC_ERR);
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b->rw = temp;
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}
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@ -245,7 +251,7 @@ void updateRender (Row *rw)
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/* Render is long as size with the added tab spaces - 1
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* (we already count for the \t as a char) */
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rw->render = malloc(rw->size + tabs * (TABSIZE - 1) + 1);
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//if (rw->render == NULL) termDie ("malloc in updateRender");
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if (rw->render == NULL) die ("malloc in updateRender", MALLOC_ERR);
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/* put all the characters (substituing all special chars)
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* into the render buffer */
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28
src/ste.c
28
src/ste.c
@ -10,6 +10,7 @@
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#include "fbuffer.h"
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#include "config.h"
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#include "die.h"
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/* defines */
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#define CTRL(k) ((k) & 0x1f) // Control mask modifier
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@ -74,8 +75,6 @@ static inline void lnMove (int y, int x);
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/* Terminal operations */
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static void termInit (void);
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static void termExit (void);
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static void termDie (char *s);
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/* file operations */
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static void fileOpen (char *filename);
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@ -129,7 +128,7 @@ int main (int argc, char *argv[])
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/* Wait for an event (keypress) */
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switch (c = getch()) {
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case (CTRL('q')):
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termExit();
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die("", AOK);
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break;
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case (KEY_MOVE_UP):
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@ -210,7 +209,7 @@ int main (int argc, char *argv[])
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/* If by chance i find myself here be sure
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* end curses mode and clenaup */
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termExit();
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die("", AOK);
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return 0;
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}
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@ -268,23 +267,6 @@ int decimalSize (int n)
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return l + 1;
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}
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void termExit (void)
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{
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erase();
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refresh();
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endwin();
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exit(0);
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}
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void termDie (char *s)
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{
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erase();
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refresh();
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endwin();
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perror(s);
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exit(1);
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}
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/* ----------------------------- term operations -------------------------------- */
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void drawScreen ()
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@ -327,7 +309,7 @@ void drawLines (void)
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lnMove(i, 0);
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/* Draw the line matcing render memory */
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if (&rows.rw[ln] == NULL) termDie("drawlines NULL");
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if (&rows.rw[ln] == NULL) die("drawlines NULL", BAD_PNTR);
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if (rows.rw[ln].r_size > t.cur.off_x) {
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start = t.cur.off_x;
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@ -382,7 +364,7 @@ void drawBar (char *s)
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void fileOpen (char *filename)
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{
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FILE *fp = fopen(filename, "r");
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if (fp == NULL) termDie("Cannot open file");
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if (fp == NULL) die("Cannot open file", BAD_FILE);
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/* Init the linebuffer */
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char *line = NULL;
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