1 files changed, 158 insertions, 0 deletions
diff --git a/src/varchar.c b/src/varchar.c
new file mode 100644
index 0000000..592ff74
--- /dev/null
+++ b/src/varchar.c
@@ -0,0 +1,158 @@
+/*
+
+    casm - Simple, portable assembler
+
+    Copyright (C) 2003-2015  Ian Cowburn (ianc@noddybox.demon.co.uk)
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+    -------------------------------------------------------------------------
+
+    Collection for macros.
+
+*/
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdarg.h>
+
+#include "global.h"
+#include "codepage.h"
+#include "varchar.h"
+
+
+/* ---------------------------------------- TYPES
+*/
+
+struct varchar
+{
+    size_t      len;
+    size_t      size;
+    char        *data;
+};
+
+
+/* ---------------------------------------- INTERFACES
+*/
+
+Varchar *VarcharCreate(const char *initial)
+{
+    Varchar *str;
+
+    str = Malloc(sizeof *str);
+    str->len = 0;
+    str->size = 0;
+    str->data = NULL;
+
+    if (initial)
+    {
+        VarcharAdd(str, initial);
+    }
+
+    return str;
+}
+
+
+Varchar *VarcharAddChar(Varchar *str, int c)
+{
+    if ((str->size - str->len) < 2)
+    {
+        str->size += 1024;
+        str->data = Realloc(str->data, str->size);
+    }
+
+    str->data[str->len++] = c;
+    str->data[str->len] = 0;
+
+    return str;
+}
+
+
+Varchar *VarcharAdd(Varchar *str, const char *c)
+{
+    size_t l;
+
+    l = strlen(c);
+
+    if ((str->size - str->len) <= (l + 1))
+    {
+        str->size += (l / 1024 + 1) * 1024;
+        str->data = Realloc(str->data, str->size);
+    }
+
+    strcpy(str->data + str->len, c);
+    str->len += l;
+    str->data[str->len] = 0;
+
+    return str;
+}
+
+
+Varchar *VarcharPrintf(Varchar *str, const char *fmt, ...)
+{
+    char buff[1025];
+    va_list va;
+    size_t l;
+
+    va_start(va, fmt);
+    vsnprintf(buff, sizeof buff, fmt, va);
+    va_end(va);
+
+    buff[1024] = 0;
+
+    return VarcharAdd(str, buff);
+}
+
+
+const char *VarcharContents(Varchar *str)
+{
+    return str->data;
+}
+
+
+char *VarcharTransfer(Varchar *str)
+{
+    char *p = str->data;
+
+    free(str);
+
+    return p;
+}
+
+void VarcharClear(Varchar *str)
+{
+    if (str->data)
+    {
+        free(str->data);
+    }
+
+    str->len = 0;
+    str->size = 0;
+    str->data = NULL;
+}
+
+void VarcharFree(Varchar *str)
+{
+    if (str->data)
+    {
+        free(str->data);
+    }
+
+    free(str);
+}
+
+
+/*
+vim: ai sw=4 ts=8 expandtab
+*/