74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
#define _DEFAULT_SOURCE
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#define _BSD_SOURCE
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#define _GNU_SOURCE
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#include <errno.h> // for errno
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#include <fcntl.h> // for open, O_CREAT, O_RDWR
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#include <stdio.h> // for NULL, fclose, fopen, FILE
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#include <stdlib.h> // for free
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#include <string.h> // for strdup, strerror
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#include <unistd.h> // for close, ftruncate, ssize_t
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#include <termios.h> // for termios
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#include "file.h"
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#include "fn.h" // for editorSetStatusMessage, E, editorConfig, edito...
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#include "hl.h" // for editorSelectSyntaxHighlight
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#include "row.h" // for editorRowsToString
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#include "terminal.h" // for die
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void editorOpen(char *filename) {
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free(E.filename);
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// TODO: Maybe replace strdup (string.h), becaus it is no strict posix c lib
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E.filename = strdup(filename);
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editorSelectSyntaxHighlight();
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FILE *fp = fopen(filename, "r");
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if (!fp) die("fopen");
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char *line = NULL;
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size_t linecap = 0;
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ssize_t linelen;
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while ((linelen = getline(&line, &linecap, fp)) != -1) {
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while (linelen > 0 && (line[linelen - 1] == '\n' ||
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line[linelen - 1] == '\r'))
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linelen--;
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editorInsertRow(E.numrows, line, linelen);
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}
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free(line);
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fclose(fp);
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E.dirty = 0;
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}
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void editorSave() {
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if (E.filename == NULL) {
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E.filename = editorPrompt("Save as: %s (ESC to cancel)", NULL);
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if (E.filename == NULL) {
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editorSetStatusMessage("Save aborted");
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return;
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}
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}
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int len;
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char *buf = editorRowsToString(&len);
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int fd = open(E.filename, O_RDWR | O_CREAT, 0644);
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if (fd != -1) {
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if (ftruncate(fd, len) != -1) {
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if (write(fd, buf, len) == len) {
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close(fd);
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free(buf);
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E.dirty = 0;
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editorSetStatusMessage("%d bytes written to disk", len);
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return;
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}
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editorSelectSyntaxHighlight();
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}
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close(fd);
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}
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free(buf);
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editorSetStatusMessage("Can't save! I/O error: %s", strerror(errno));
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}
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