parent
31afd8b2bc
commit
7ca58c594d
@ -1,15 +1,19 @@ |
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CC=gcc
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CFLAGS=-Wall -Wextra -pedantic -Werror -Warray-bounds
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OFLAGS=-O3
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#-ltcmalloc
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LFLAGS=-lncursesw
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DFLAGS=-g -O0 -v -da -Q
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ste: ste.c |
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$(CC) $(CFLAGS) $(OFLAGS) $(LFLAGS) -o ste $^
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OBJ=ste.o fbuffer.o
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DEPS=fbuffer.h
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ste: $(OBJ) |
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$(CC) $(CFLAGS) $(OFLAGS) $(LFLAGS) -o $@ $^
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%.o: %.c $(DEPS) |
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$(CC) $(CFLAGS) $(OFLAGS) $(LFLAGS) -c -o $@ $<
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dbg: ste.c |
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$(CC) $(CFLAGS) $(DFLAGS) $(LFLAGS) -o dbg $^
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clean: |
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rm ste ste.c.* dbg
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rm ste $(OBJ)
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@ -0,0 +1,204 @@ |
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#include "fbuffer.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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void bufInit (buf *b) |
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{ |
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b->rw = NULL; |
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b->rownum = 0; |
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} |
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/* Add a row to the file buffer */ |
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void rowAddLast (buf *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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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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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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updateRender(&b->rw[b->rownum]); |
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b->rownum++; |
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} |
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void rowAddChar (row *rw, char c, int pos) |
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{ |
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/* Check if char is valid */ |
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if (!c || (iscntrl(c) && c != '\t')) return; |
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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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/* 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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/* add the new char */ |
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rw->chars[pos] = c; |
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updateRender(rw); |
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} |
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int rowDeleteChar (row *rw, int select, int pos) // WIP
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{ |
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/* Check if the character is valid */ |
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if (rw->chars[pos - 1] == '\0' && pos) return 0; |
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if (!pos && !select) return 0; |
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if (rw->chars[pos] == '\0' && select) return 0; |
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//change pos based on the command
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if (!select) pos--; |
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memcpy(&rw->chars[pos], &rw->chars[pos + 1], rw->size - pos); |
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char *s = realloc(rw->chars, rw->size); |
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if (s != NULL) rw->chars = s; |
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rw->size--; |
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updateRender(rw); |
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return 1; |
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} |
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void rowAddRow (buf *b, int pos, int cur) // WIP; TO DOCUMENT |
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{ |
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/* MOVE THE ROWS AWAY */ |
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/* add another line to the bottom containing the previous
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* (last) line, effectively making new space */ |
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rowAddLast(b, b->rw[b->rownum - 1].chars, b->rw[b->rownum - 1].size); |
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/* copy all other lines until the specified position to the next one */ |
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for (int last = b->rownum - 1; last > pos; last--) |
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rowCpy(&b->rw[last], &b->rw[last - 1]); |
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/* SPLIT THE ROW AT POS AND STORE IT */ |
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/* Get the row length at position after the cursor */ |
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int len = b->rw[pos].size - cur; |
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/* create a dummy row as the new row souce */ |
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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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/* 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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/* update the dummy row */ |
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nex.chars = s; |
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nex.size = strlen(s); |
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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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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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/* update info and render */ |
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b->rw[pos].size = cur; |
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updateRender(&b->rw[pos]); |
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/* copy the dummy to the new line and free */ |
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rowCpy(&b->rw[pos + 1], &nex); |
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rowFree(&nex); |
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} |
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void rowFree (row *rw) // WIP
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{ |
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/* Free both render and memory strings */ |
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free(rw->render); |
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free(rw->chars); |
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/* clear sizes */ |
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rw->size = 0; |
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rw->r_size = 0; |
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rw->utf = 0; |
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} |
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void rowCpy (row *to, row *from) // WIP
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{ |
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/* Free the destination row (without destroying it) */ |
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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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/* 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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memcpy(to->chars, from->chars, to->size); |
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to->chars[to->size] = '\0'; |
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/* Then update the render */ |
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updateRender(to); |
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} |
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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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rw->chars = temp; |
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memcpy(&rw->chars[rw->size], s, len); |
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rw->size += len; |
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rw->chars[rw->size] = '\0'; |
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updateRender(rw); |
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} |
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void rowDeleteRow (buf *b, int pos) |
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{ |
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if (b->rownum == 1) return; |
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if (pos >= b->rownum) return; |
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if (pos < 0) return; |
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for (; pos < b->rownum - 1; pos++) { |
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rowCpy(&b->rw[pos], &b->rw[pos + 1]); // rowcpy already frees the row
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} |
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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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b->rw = temp; |
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} |
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void updateRender (row *rw) |
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{ |
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/* count the special characters
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* spaces, utf-8 continuation chars */ |
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static int tabs, i, off, cc, ut; |
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for (i = 0, tabs = 0, cc = 0, ut = 0; i < rw->size; i++) { |
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if (rw->chars[i] == '\t') tabs++; |
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else if (isCont(rw->chars[i])) cc++; |
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else if (isUtf(rw->chars[i])) ut++; |
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} |
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rw->render = NULL; |
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free(rw->render); |
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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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/* put all the characters (substituing all special chars)
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* into the render buffer */ |
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for (i = 0, off = 0; i < rw->size; i++) { |
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if (rw->chars[i] == '\t') { |
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for (int j = 0; j < TABSIZE; j++){ |
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//if (!j) rw->render[off++] = '|';
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//else rw->render[off++] = ' ';
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rw->render[off++] = ' '; |
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}
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} else { |
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rw->render[off++] = rw->chars[i]; |
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} |
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} |
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rw->render[off] = '\0'; |
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rw->r_size = off - cc; |
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rw->utf = cc + ut; |
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} |
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@ -0,0 +1,46 @@ |
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#ifndef _FBUFFER_H_ |
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#define _FBUFFER_H_ |
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#define TABSIZE 4 // Tab size as used in render
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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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* real size of the row
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* Utf-8 continuation chars */ |
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typedef struct row { |
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int size; |
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int r_size; |
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int utf; |
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char *chars; |
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char *render; |
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} row; |
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/* Empty row initializer */ |
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#define EROW {0, 0, 0, NULL, NULL} |
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/* Rows structure (or file buffer)
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* defines rows and teh number of rows */ |
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typedef struct buf{ |
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row *rw; |
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int rownum; |
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} buf; |
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void bufInit (buf *b); |
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void rowAddChar (row *rw, char c, int pos); |
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int rowDeleteChar (row *rw, int select, int pos); |
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void rowCpy (row *to, row *from); |
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void rowAddRow (buf *b, int pos, int cur); |
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void rowFree (row *rw); |
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void rowAppendString (row *rw, char *s, int len); |
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void rowDeleteRow (buf *b, int pos); |
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void rowAddLast (buf *b, char *s, int len); |
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void updateRender (row *rw); |
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int isUtf (int c); |
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int isCont (int c); |
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int isStart (int c); |
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#endif |
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Loading…
Reference in new issue