From e2f912dc5bbfad3a6f4b5e1dbfbe51be148b3232 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue, 28 Jul 2009 09:32:36 +0100
Subject: [PATCH] [script] Add cvi, cvr, mod

Add implementations of convert-to-integer, convert-to-real and modulus
supplied by Zack Weinberg <zweinberg@mozilla.com>.
---
 util/cairo-script/cairo-script-operators.c | 95 +++++++++++++++++++++-
 util/cairo-script/cairo-script-private.h   |  3 +
 util/cairo-script/cairo-script-scanner.c   |  6 +-
 3 files changed, 100 insertions(+), 4 deletions(-)

diff --git a/util/cairo-script/cairo-script-operators.c b/util/cairo-script/cairo-script-operators.c
index b1f287eb3..81bbe7647 100644
--- a/util/cairo-script/cairo-script-operators.c
+++ b/util/cairo-script/cairo-script-operators.c
@@ -1108,6 +1108,78 @@ _curve_to (csi_t *ctx)
     return CSI_STATUS_SUCCESS;
 }
 
+static csi_status_t
+_cvi (csi_t *ctx)
+{
+    csi_object_t *val, obj;
+
+    check (1);
+
+    val = _csi_peek_ostack (ctx, 0);
+
+    switch ((int) csi_object_get_type (val)) {
+    case CSI_OBJECT_TYPE_INTEGER:
+	return CSI_STATUS_SUCCESS;
+
+    case CSI_OBJECT_TYPE_REAL:
+	pop (1);
+	return _csi_push_ostack_integer (ctx, val->datum.real);
+
+    case CSI_OBJECT_TYPE_STRING:
+	if (! _csi_parse_number (&obj,
+				 val->datum.string->string,
+				 val->datum.string->len))
+	{
+	    return _csi_error (CSI_STATUS_INVALID_SCRIPT);
+	}
+
+	pop (1);
+	if (csi_object_get_type (&obj) == CSI_OBJECT_TYPE_INTEGER)
+	    return push (&obj);
+	else
+	    return _csi_push_ostack_integer (ctx, obj.datum.real);
+
+    default:
+	return _csi_error (CSI_STATUS_INVALID_SCRIPT);
+    }
+}
+
+static csi_status_t
+_cvr (csi_t *ctx)
+{
+    csi_object_t *val, obj;
+
+    check (1);
+
+    val = _csi_peek_ostack (ctx, 0);
+
+    switch ((int) csi_object_get_type (val)) {
+    case CSI_OBJECT_TYPE_REAL:
+	return CSI_STATUS_SUCCESS;
+
+    case CSI_OBJECT_TYPE_INTEGER:
+	pop (1);
+	return _csi_push_ostack_real (ctx, val->datum.integer);
+
+    case CSI_OBJECT_TYPE_STRING:
+	if (! _csi_parse_number (&obj,
+				 val->datum.string->string,
+				 val->datum.string->len))
+	{
+	    return _csi_error (CSI_STATUS_INVALID_SCRIPT);
+	}
+
+	pop (1);
+	if (csi_object_get_type (&obj) == CSI_OBJECT_TYPE_REAL)
+	    return push (&obj);
+	else
+	    return _csi_push_ostack_real (ctx, obj.datum.integer);
+
+    default:
+	return _csi_error (CSI_STATUS_INVALID_SCRIPT);
+    }
+}
+
 static csi_status_t
 _def (csi_t *ctx)
 {
@@ -3241,6 +3313,25 @@ _matrix (csi_t *ctx)
     return push (&matrix);
 }
 
+static csi_status_t
+_mod (csi_t *ctx)
+{
+    csi_integer_t x, y;
+    csi_status_t status;
+
+    check (2);
+
+    status = _csi_ostack_get_integer (ctx, 0, &y);
+    if (_csi_unlikely (status))
+	return status;
+    status = _csi_ostack_get_integer (ctx, 1, &x);
+    if (_csi_unlikely (status))
+	return status;
+
+    pop (2);
+    return _csi_push_ostack_integer (ctx, x % y);
+}
+
 static csi_status_t
 _move_to (csi_t *ctx)
 {
@@ -5548,6 +5639,8 @@ _defs[] = {
     { "count", NULL },
     { "count-to-mark", NULL },
     { "curve-to", _curve_to },
+    { "cvi", _cvi },
+    { "cvr", _cvr },
     { "def", _def },
     { "device-to-user", NULL },
     { "device-to-user-distance", NULL },
@@ -5601,7 +5694,7 @@ _defs[] = {
     { "mark", _mark },
     { "mask", _mask },
     { "matrix", _matrix },
-    { "mod", NULL },
+    { "mod", _mod },
     { "move-to", _move_to },
     { "mul", _mul },
     { "multiply", NULL },
diff --git a/util/cairo-script/cairo-script-private.h b/util/cairo-script/cairo-script-private.h
index 54a840f2f..1fd8125df 100644
--- a/util/cairo-script/cairo-script-private.h
+++ b/util/cairo-script/cairo-script-private.h
@@ -824,6 +824,9 @@ _csi_translate_file (csi_t *ctx,
 csi_private void
 _csi_scanner_fini (csi_t *ctx, csi_scanner_t *scanner);
 
+csi_private csi_boolean_t
+_csi_parse_number (csi_object_t *obj, const char *s, int len);
+
 /* cairo-script-stack.c */
 
 csi_private csi_status_t
diff --git a/util/cairo-script/cairo-script-scanner.c b/util/cairo-script/cairo-script-scanner.c
index 1d717f4b5..fb2ce9a94 100644
--- a/util/cairo-script/cairo-script-scanner.c
+++ b/util/cairo-script/cairo-script-scanner.c
@@ -228,8 +228,8 @@ token_add_unchecked (csi_scanner_t *scan, int c)
     buffer_add (&scan->buffer, c);
 }
 
-static csi_boolean_t
-parse_number (csi_object_t *obj, const char *s, int len)
+csi_boolean_t
+_csi_parse_number (csi_object_t *obj, const char *s, int len)
 {
     int radix = 0;
     long long mantissa = 0;
@@ -464,7 +464,7 @@ token_end (csi_t *ctx, csi_scanner_t *scan, csi_file_t *src)
 	if (_csi_unlikely (status))
 	    longjmp (scan->jmpbuf, status);
     } else {
-	if (! parse_number (&obj, s, len)) {
+	if (! _csi_parse_number (&obj, s, len)) {
 	    status = csi_name_new (ctx, &obj, s, len);
 	    if (_csi_unlikely (status))
 		longjmp (scan->jmpbuf, status);