1 files changed, 0 insertions, 153 deletions
diff --git a/examples/dte/file-history.c b/examples/dte/file-history.c
deleted file mode 100644
index 8066b94..0000000
--- a/examples/dte/file-history.c
+++ /dev/null
@@ -1,153 +0,0 @@
-#include <errno.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/types.h>
-#include "file-history.h"
-#include "error.h"
-#include "util/debug.h"
-#include "util/readfile.h"
-#include "util/str-util.h"
-#include "util/string-view.h"
-#include "util/strtonum.h"
-#include "util/xmalloc.h"
-#include "util/xstdio.h"
-
-enum {
-    MAX_ENTRIES = 512
-};
-
-void file_history_add(FileHistory *history, unsigned long row, unsigned long col, const char *filename)
-{
-    BUG_ON(row == 0);
-    BUG_ON(col == 0);
-    HashMap *map = &history->entries;
-    FileHistoryEntry *e = hashmap_get(map, filename);
-
-    if (e) {
-        if (e == history->last) {
-            e->row = row;
-            e->col = col;
-            return;
-        }
-        e->next->prev = e->prev;
-        if (unlikely(e == history->first)) {
-            history->first = e->next;
-        } else {
-            e->prev->next = e->next;
-        }
-    } else {
-        if (map->count == MAX_ENTRIES) {
-            // History is full; recycle the oldest entry
-            FileHistoryEntry *old_first = history->first;
-            FileHistoryEntry *new_first = old_first->next;
-            new_first->prev = NULL;
-            history->first = new_first;
-            e = hashmap_remove(map, old_first->filename);
-            BUG_ON(e != old_first);
-        } else {
-            e = xnew(FileHistoryEntry, 1);
-        }
-        e->filename = xstrdup(filename);
-        hashmap_insert(map, e->filename, e);
-    }
-
-    // Insert the entry at the end of the list
-    FileHistoryEntry *old_last = history->last;
-    e->next = NULL;
-    e->prev = old_last;
-    e->row = row;
-    e->col = col;
-    history->last = e;
-    if (likely(old_last)) {
-        old_last->next = e;
-    } else {
-        history->first = e;
-    }
-}
-
-static bool parse_ulong_field(StringView *sv, unsigned long *valp)
-{
-    size_t n = buf_parse_ulong(sv->data, sv->length, valp);
-    if (n == 0 || *valp == 0 || sv->data[n] != ' ') {
-        return false;
-    }
-    strview_remove_prefix(sv, n + 1);
-    return true;
-}
-
-void file_history_load(FileHistory *history, char *filename)
-{
-    BUG_ON(!history);
-    BUG_ON(!filename);
-    BUG_ON(history->filename);
-
-    hashmap_init(&history->entries, MAX_ENTRIES);
-    history->filename = filename;
-
-    char *buf;
-    const ssize_t ssize = read_file(filename, &buf);
-    if (ssize < 0) {
-        if (errno != ENOENT) {
-            error_msg("Error reading %s: %s", filename, strerror(errno));
-        }
-        return;
-    }
-
-    for (size_t pos = 0, size = ssize; pos < size; ) {
-        unsigned long row, col;
-        StringView line = buf_slice_next_line(buf, &pos, size);
-        if (unlikely(
-            !parse_ulong_field(&line, &row)
-            || !parse_ulong_field(&line, &col)
-            || line.length < 2
-            || line.data[0] != '/'
-            || buf[pos - 1] != '\n'
-        )) {
-            continue;
-        }
-        buf[pos - 1] = '\0'; // null-terminate line, by replacing '\n' with '\0'
-        file_history_add(history, row, col, line.data);
-    }
-
-    free(buf);
-}
-
-void file_history_save(const FileHistory *history)
-{
-    const char *filename = history->filename;
-    if (!filename) {
-        return;
-    }
-
-    FILE *f = xfopen(filename, "w", O_CLOEXEC, 0666);
-    if (!f) {
-        error_msg("Error creating %s: %s", filename, strerror(errno));
-        return;
-    }
-
-    for (const FileHistoryEntry *e = history->first; e; e = e->next) {
-        xfprintf(f, "%lu %lu %s\n", e->row, e->col, e->filename);
-    }
-
-    fclose(f);
-}
-
-bool file_history_find(const FileHistory *history, const char *filename, unsigned long *row, unsigned long *col)
-{
-    const FileHistoryEntry *e = hashmap_get(&history->entries, filename);
-    if (!e) {
-        return false;
-    }
-    *row = e->row;
-    *col = e->col;
-    return true;
-}
-
-void file_history_free(FileHistory *history)
-{
-    hashmap_free(&history->entries, free);
-    free(history->filename);
-    history->filename = NULL;
-    history->first = NULL;
-    history->last = NULL;
-}