Initial commit (squashed)

src/util.h

@@ -0,0 +1,178 @@
+#ifndef SIST2_UTIL_H
+#define SIST2_UTIL_H
+
+#include <stdio.h>
+
+#define TEXT_BUF_FULL -1
+#define INITIAL_BUF_SIZE 1024 * 16
+#define SHOULD_IGNORE_CHAR(c) c < '0' || c > 'z'
+
+typedef struct dyn_buffer {
+    char *buf;
+    size_t cur;
+    size_t size;
+} dyn_buffer_t;
+
+#include "sist.h"
+
+typedef struct text_buffer {
+    size_t max_size;
+    int last_char_was_whitespace;
+    dyn_buffer_t dyn_buffer;
+} text_buffer_t;
+
+__always_inline
+dyn_buffer_t dyn_buffer_create() {
+    dyn_buffer_t buf;
+
+    buf.size = INITIAL_BUF_SIZE;
+    buf.cur = 0;
+    buf.buf = malloc(INITIAL_BUF_SIZE);
+
+    return buf;
+}
+
+__always_inline
+void grow_buffer(dyn_buffer_t *buf, size_t size) {
+    if (buf->cur + size > buf->size) {
+        do {
+            buf->size *= 2;
+        } while (buf->cur + size > buf->size);
+
+        buf->buf = realloc(buf->buf, buf->size);
+    }
+}
+
+__always_inline
+void grow_buffer_small(dyn_buffer_t *buf) {
+    if (buf->cur + sizeof(long) > buf->size) {
+        buf->size *= 2;
+        buf->buf = realloc(buf->buf, buf->size);
+    }
+}
+
+__always_inline
+void dyn_buffer_write(dyn_buffer_t *buf, void *data, size_t size) {
+    grow_buffer(buf, size);
+
+    memcpy(buf->buf + buf->cur, data, size);
+    buf->cur += size;
+}
+
+__always_inline
+void dyn_buffer_write_char(dyn_buffer_t *buf, char c) {
+    grow_buffer_small(buf);
+
+    *(buf->buf + buf->cur) = c;
+    buf->cur += sizeof(c);
+}
+
+__always_inline
+void dyn_buffer_write_str(dyn_buffer_t *buf, char *str) {
+    dyn_buffer_write(buf, str, strlen(str));
+    dyn_buffer_write_char(buf, '\0');
+}
+
+__always_inline
+void dyn_buffer_write_int(dyn_buffer_t *buf, int d) {
+    grow_buffer_small(buf);
+
+    *(int *) (buf->buf + buf->cur) = d;
+    buf->cur += sizeof(int);
+}
+
+__always_inline
+void dyn_buffer_write_short(dyn_buffer_t *buf, short s) {
+    grow_buffer_small(buf);
+
+    *(short *) (buf->buf + buf->cur) = s;
+    buf->cur += sizeof(short);
+}
+
+__always_inline
+void dyn_buffer_write_long(dyn_buffer_t *buf, unsigned long l) {
+    grow_buffer_small(buf);
+
+    *(unsigned long *) (buf->buf + buf->cur) = l;
+    buf->cur += sizeof(unsigned long);
+}
+
+__always_inline
+void dyn_buffer_destroy(dyn_buffer_t *buf) {
+    free(buf->buf);
+}
+
+__always_inline
+void text_buffer_destroy(text_buffer_t *buf) {
+    dyn_buffer_destroy(&buf->dyn_buffer);
+}
+
+__always_inline
+text_buffer_t text_buffer_create(int max_size) {
+    text_buffer_t text_buf;
+
+    text_buf.dyn_buffer = dyn_buffer_create();
+    text_buf.max_size = max_size;
+    text_buf.last_char_was_whitespace = FALSE;
+
+    return text_buf;
+}
+
+__always_inline
+void text_buffer_terminate_string(text_buffer_t *buf) {
+    dyn_buffer_write_char(&buf->dyn_buffer, '\0');
+}
+
+__always_inline
+int text_buffer_append_char(text_buffer_t *buf, int c) {
+
+    if (SHOULD_IGNORE_CHAR(c)) {
+        if (!buf->last_char_was_whitespace) {
+            dyn_buffer_write_char(&buf->dyn_buffer, ' ');
+            buf->last_char_was_whitespace = TRUE;
+
+            if (buf->dyn_buffer.cur >= buf->max_size) {
+                return TEXT_BUF_FULL;
+            }
+        }
+    } else {
+        buf->last_char_was_whitespace = FALSE;
+        dyn_buffer_write_char(&buf->dyn_buffer, (char) c);
+
+        if (buf->dyn_buffer.cur >= buf->max_size) {
+            return TEXT_BUF_FULL;
+        }
+    }
+
+    return 0;
+}
+
+char *abspath(const char * path);
+
+void progress_bar_print(double percentage, size_t tn_size, size_t index_size);
+
+
+__always_inline
+void incremental_put(GHashTable *table, unsigned long inode_no, int mtime) {
+    g_hash_table_insert(table, (gpointer) inode_no, GINT_TO_POINTER(mtime));
+}
+
+__always_inline
+int incremental_get(GHashTable *table, unsigned long inode_no) {
+    if (table != NULL) {
+        return GPOINTER_TO_INT(g_hash_table_lookup(table, (gpointer) inode_no));
+    } else {
+        return 0;
+    }
+}
+
+__always_inline
+int incremental_mark_file_for_copy(GHashTable *table, unsigned long inode_no) {
+    g_hash_table_insert(table, GINT_TO_POINTER(inode_no), GINT_TO_POINTER(1));
+}
+
+GHashTable *incremental_get_table();
+
+
+
+#endif