1 files changed, 137 insertions, 0 deletions
diff --git a/src/pretty_printer.hh b/src/pretty_printer.hh
new file mode 100644
index 0000000..f10b946
--- /dev/null
+++ b/src/pretty_printer.hh
@@ -0,0 +1,137 @@
+/**
+ * Copyright (c) 2015, Timothy Stack
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * * Neither the name of Timothy Stack nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef pretty_printer_hh
+#define pretty_printer_hh
+
+#include <deque>
+#include <map>
+#include <sstream>
+#include <stack>
+#include <utility>
+#include <vector>
+
+#include <sys/types.h>
+
+#include "base/attr_line.hh"
+#include "base/file_range.hh"
+#include "base/opt_util.hh"
+#include "data_scanner.hh"
+#include "document.sections.hh"
+
+class pretty_printer {
+public:
+    struct element {
+        element(data_token_t token, data_scanner::capture_t& cap)
+            : e_token(token), e_capture(cap)
+        {
+        }
+
+        data_token_t e_token;
+        data_scanner::capture_t e_capture;
+    };
+
+    pretty_printer(data_scanner* ds, string_attrs_t sa, int leading_indent = 0)
+        : pp_leading_indent(leading_indent), pp_scanner(ds),
+          pp_attrs(std::move(sa))
+    {
+        this->pp_body_lines.push(0);
+        this->pp_scanner->reset();
+        while (true) {
+            auto tok_res = this->pp_scanner->tokenize2();
+            if (!tok_res) {
+                break;
+            }
+            if (tok_res->tr_token == DT_XML_CLOSE_TAG
+                || tok_res->tr_token == DT_XML_DECL_TAG)
+            {
+                pp_is_xml = true;
+                break;
+            }
+        }
+
+        this->pp_interval_state.resize(1);
+        this->pp_hier_nodes.push_back(
+            std::make_unique<lnav::document::hier_node>());
+    }
+
+    void append_to(attr_line_t& al);
+
+    std::vector<lnav::document::section_interval_t> take_intervals()
+    {
+        return std::move(this->pp_intervals);
+    }
+
+    std::unique_ptr<lnav::document::hier_node> take_hier_root()
+    {
+        if (this->pp_hier_stage == nullptr && !this->pp_hier_nodes.empty()) {
+            this->pp_hier_stage = std::move(this->pp_hier_nodes.back());
+            this->pp_hier_nodes.pop_back();
+        }
+        return std::move(this->pp_hier_stage);
+    }
+
+private:
+    void descend();
+
+    void ascend();
+
+    void start_new_line();
+
+    bool flush_values(bool start_on_depth = false);
+
+    void append_indent();
+
+    void write_element(const element& el);
+
+    void append_child_node();
+
+    struct interval_state {
+        nonstd::optional<file_off_t> is_start;
+        std::string is_name;
+    };
+
+    int pp_leading_indent;
+    int pp_depth{0};
+    int pp_line_length{0};
+    int pp_soft_indent{0};
+    std::stack<int> pp_body_lines{};
+    data_scanner* pp_scanner;
+    string_attrs_t pp_attrs;
+    std::ostringstream pp_stream;
+    std::deque<element> pp_values{};
+    int pp_shift_accum{0};
+    bool pp_is_xml{false};
+    std::vector<interval_state> pp_interval_state;
+    std::vector<lnav::document::section_interval_t> pp_intervals;
+    std::vector<std::unique_ptr<lnav::document::hier_node>> pp_hier_nodes;
+    std::unique_ptr<lnav::document::hier_node> pp_hier_stage;
+};
+
+#endif