Add C string type

5 files changed, 96 insertions, 0 deletions

diff --git a/builtins/c_string.c b/builtins/c_string.c
new file mode 100644
index 00000000..f74d6da2
--- /dev/null
+++ b/builtins/c_string.c
@@ -0,0 +1,52 @@
+// Type info and methods for CString datatype (char*)
+#include <ctype.h>
+#include <err.h>
+#include <gc.h>
+#include <gc/cord.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#include "functions.h"
+#include "halfsiphash.h"
+#include "text.h"
+#include "types.h"
+#include "util.h"
+
+public CORD CString$as_text(const void *c_string, bool colorize, const TypeInfo *info)
+{
+    (void)info;
+    if (!c_string) return "CString";
+    CORD text = CORD_from_char_star(*(char**)c_string);
+    return CORD_all(colorize ? "\x1b[34mCString\x1b[m(" : "CString(", Text$quoted(text, colorize), ")");
+}
+
+public int CString$compare(const char **x, const char **y)
+{
+    if (!*x != !*y)
+        return (!*y) - (!*x);
+    return strcmp(*x, *y);
+}
+
+public bool CString$equal(const char **x, const char **y)
+{
+    return CString$compare(x, y) == 0;
+}
+
+public uint32_t CString$hash(const char **c_str)
+{
+    if (!*c_str) return 0;
+
+    uint32_t hash;
+    halfsiphash(*c_str, strlen(*c_str), TOMO_HASH_VECTOR, (uint8_t*)&hash, sizeof(hash));
+    return hash;
+}
+
+public const TypeInfo $CString = {
+    .size=sizeof(char*),
+    .align=__alignof__(char*),
+    .tag=CustomInfo,
+    .CustomInfo={.as_text=(void*)CString$as_text, .compare=(void*)CString$compare, .equal=(void*)CString$equal, .hash=(void*)CString$hash},
+};
+
+// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0
diff --git a/builtins/c_string.h b/builtins/c_string.h
new file mode 100644
index 00000000..6b4b0aad
--- /dev/null
+++ b/builtins/c_string.h
@@ -0,0 +1,18 @@
+#pragma once
+
+// Type info and methods for CString datatype, which represents C's `char*`
+
+#include <gc/cord.h>
+#include <stdbool.h>
+#include <stdint.h>
+
+#include "types.h"
+
+CORD CString$as_text(const void *str, bool colorize, const TypeInfo *info);
+int CString$compare(const char **x, const char **y);
+bool CString$equal(const char **x, const char **y);
+uint32_t CString$hash(const char **str);
+
+extern const TypeInfo $CString;
+
+// vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0
diff --git a/builtins/functions.c b/builtins/functions.c
index f668b253..eedcc9fb 100644
--- a/builtins/functions.c
+++ b/builtins/functions.c
@@ -240,4 +240,24 @@ public bool pop_flag(char **argv, int *i, const char *flag, CORD *result)
     }
 }
 
+public void *xfopen(CORD path, CORD flags)
+{
+    return fopen(CORD_to_const_char_star(path), CORD_to_const_char_star(flags));
+}
+
+public CORD xfread_all(void *fp)
+{
+    return CORD_from_file_eager(fp);
+}
+
+public void xfputs(CORD text, void *fp)
+{
+    CORD_put(text, fp);
+}
+
+public void xfclose(void *fp)
+{
+    fclose(fp);
+}
+
 // vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0
diff --git a/builtins/functions.h b/builtins/functions.h
index f1a2867e..e62fc441 100644
--- a/builtins/functions.h
+++ b/builtins/functions.h
@@ -26,4 +26,9 @@ bool generic_equal(const void *x, const void *y, const TypeInfo *type);
 CORD generic_as_text(const void *obj, bool colorize, const TypeInfo *type);
 bool pop_flag(char **argv, int *i, const char *flag, CORD *result);
 
+void *xfopen(CORD path, CORD flags);
+CORD xfread_all(void *fp);
+void xfputs(CORD text, void *fp);
+void xfclose(void *fp);
+
 // vim: ts=4 sw=0 et cino=L2,l1,(0,W4,m1,\:0
diff --git a/builtins/tomo.h b/builtins/tomo.h
index f0455ad1..ded82945 100644
--- a/builtins/tomo.h
+++ b/builtins/tomo.h
@@ -17,6 +17,7 @@
 
 #include "array.h"
 #include "bool.h"
+#include "c_string.h"
 #include "datatypes.h"
 #include "functions.h"
 #include "halfsiphash.h"