From 6bdbb45e88e7b88b294dfb6e4cb493cbc3c8cf74 Mon Sep 17 00:00:00 2001
From: Joshua Haberman <joshua@reverberate.org>
Date: Sun, 13 Feb 2011 12:59:54 -0800
Subject: Merged core/ and stream/ -> src/.  The split wasn't worth it.

---
 src/upb_textprinter.c | 143 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 143 insertions(+)
 create mode 100644 src/upb_textprinter.c

(limited to 'src/upb_textprinter.c')

diff --git a/src/upb_textprinter.c b/src/upb_textprinter.c
new file mode 100644
index 0000000..894a1ea
--- /dev/null
+++ b/src/upb_textprinter.c
@@ -0,0 +1,143 @@
+/*
+ * upb - a minimalist implementation of protocol buffers.
+ *
+ * Copyright (c) 2009 Joshua Haberman.  See LICENSE for details.
+ */
+
+#include "upb_textprinter.h"
+
+#include <inttypes.h>
+#include <stdlib.h>
+#include "upb_def.h"
+#include "upb_string.h"
+
+struct _upb_textprinter {
+  upb_bytesink *bytesink;
+  int indent_depth;
+  bool single_line;
+  upb_status status;
+};
+
+#define CHECK(x) if ((x) < 0) goto err;
+
+static int upb_textprinter_indent(upb_textprinter *p)
+{
+  if(!p->single_line)
+    for(int i = 0; i < p->indent_depth; i++)
+      CHECK(upb_bytesink_putstr(p->bytesink, UPB_STRLIT("  "), &p->status));
+  return 0;
+err:
+  return -1;
+}
+
+static int upb_textprinter_endfield(upb_textprinter *p) {
+  if(p->single_line) {
+    CHECK(upb_bytesink_putstr(p->bytesink, UPB_STRLIT(" "), &p->status));
+  } else {
+    CHECK(upb_bytesink_putstr(p->bytesink, UPB_STRLIT("\n"), &p->status));
+  }
+  return 0;
+err:
+  return -1;
+}
+
+static upb_flow_t upb_textprinter_value(void *_p, upb_fielddef *f,
+                                        upb_value val) {
+  upb_textprinter *p = _p;
+  upb_textprinter_indent(p);
+  CHECK(upb_bytesink_printf(p->bytesink, &p->status, UPB_STRFMT ": ", UPB_STRARG(f->name)));
+#define CASE(fmtstr, member) \
+    CHECK(upb_bytesink_printf(p->bytesink, &p->status, fmtstr, upb_value_get ## member(val))); break;
+  switch(f->type) {
+    case UPB_TYPE(DOUBLE):
+      CASE("%0.f", double);
+    case UPB_TYPE(FLOAT):
+      CASE("%0.f", float)
+    case UPB_TYPE(INT64):
+    case UPB_TYPE(SFIXED64):
+    case UPB_TYPE(SINT64):
+      CASE("%" PRId64, int64)
+    case UPB_TYPE(UINT64):
+    case UPB_TYPE(FIXED64):
+      CASE("%" PRIu64, uint64)
+    case UPB_TYPE(UINT32):
+    case UPB_TYPE(FIXED32):
+      CASE("%" PRIu32, uint32);
+    case UPB_TYPE(ENUM): {
+      upb_enumdef *enum_def = upb_downcast_enumdef(f->def);
+      upb_string *enum_label =
+          upb_enumdef_iton(enum_def, upb_value_getint32(val));
+      if (enum_label) {
+        // We found a corresponding string for this enum.  Otherwise we fall
+        // through to the int32 code path.
+        CHECK(upb_bytesink_putstr(p->bytesink, enum_label, &p->status));
+        break;
+      }
+    }
+    case UPB_TYPE(INT32):
+    case UPB_TYPE(SFIXED32):
+    case UPB_TYPE(SINT32):
+      CASE("%" PRId32, int32)
+    case UPB_TYPE(BOOL):
+      CASE("%hhu", bool);
+    case UPB_TYPE(STRING):
+    case UPB_TYPE(BYTES):
+      // TODO: escaping.
+      CHECK(upb_bytesink_putstr(p->bytesink, UPB_STRLIT("\""), &p->status));
+      CHECK(upb_bytesink_putstr(p->bytesink, upb_value_getstr(val), &p->status))
+      CHECK(upb_bytesink_putstr(p->bytesink, UPB_STRLIT("\""), &p->status));
+      break;
+  }
+  upb_textprinter_endfield(p);
+  return UPB_CONTINUE;
+err:
+  return UPB_BREAK;
+}
+
+static upb_flow_t upb_textprinter_startsubmsg(void *_p, upb_fielddef *f,
+                                              upb_handlers *delegate_to) {
+  (void)delegate_to;
+  upb_textprinter *p = _p;
+  upb_textprinter_indent(p);
+  CHECK(upb_bytesink_printf(p->bytesink, &p->status, UPB_STRFMT " {", UPB_STRARG(f->name)));
+  if(!p->single_line) upb_bytesink_putstr(p->bytesink, UPB_STRLIT("\n"), &p->status);
+  p->indent_depth++;
+  return UPB_CONTINUE;
+err:
+  return UPB_BREAK;
+}
+
+static upb_flow_t upb_textprinter_endsubmsg(void *_p)
+{
+  upb_textprinter *p = _p;
+  p->indent_depth--;
+  upb_textprinter_indent(p);
+  upb_bytesink_putstr(p->bytesink, UPB_STRLIT("}"), &p->status);
+  upb_textprinter_endfield(p);
+  return UPB_CONTINUE;
+}
+
+upb_textprinter *upb_textprinter_new() {
+  upb_textprinter *p = malloc(sizeof(*p));
+  return p;
+}
+
+void upb_textprinter_free(upb_textprinter *p) {
+  free(p);
+}
+
+void upb_textprinter_reset(upb_textprinter *p, upb_handlers *handlers,
+                           upb_bytesink *sink, bool single_line) {
+  static upb_handlerset handlerset = {
+    NULL,  // startmsg
+    NULL,  // endmsg
+    upb_textprinter_value,
+    upb_textprinter_startsubmsg,
+    upb_textprinter_endsubmsg,
+  };
+  p->bytesink = sink;
+  p->single_line = single_line;
+  p->indent_depth = 0;
+  upb_register_handlerset(handlers, &handlerset);
+  upb_set_handler_closure(handlers, p, &p->status);
+}
-- 
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