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remove mustache

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This commit is contained in:
Jeff Becker 2018-05-06 09:42:31 -04:00
parent 8263a92432
commit ac91e309d9
No known key found for this signature in database
GPG Key ID: F357B3B42F6F9B05
26 changed files with 96 additions and 1057 deletions
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28
contrib/backends/nntpchan-daemon/Makefile
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@ -6,13 +6,6 @@ NNTPCHAN_SRC := $(wildcard $(NNTPCHAN_PATH)/*.cpp)
NNTPCHAN_HDR := $(wildcard $(NNTPCHAN_PATH)/*.hpp)
NNTPCHAN_OBJ := $(NNTPCHAN_SRC:.cpp=.o)
MUSTACHE_PATH = $(REPO)/libmustache
MUSTACHE_SRC := $(wildcard $(MUSTACHE_PATH)/*.cpp)
MUSTACHE_SRC += $(wildcard $(MUSTACHE_PATH)/*/*.cpp)
MUSTACHE_HDR := $(wildcard $(MUSTACHE_PATH)/*.hpp)
MUSTACHE_OBJ := $(MUSTACHE_SRC:.cpp=.o)
HEADERS_PATH=$(REPO)/include
TOOL_PATH := $(REPO)/tools
@ -20,19 +13,24 @@ TOOL_PATH := $(REPO)/tools
TOOL_SRC := $(wildcard $(TOOL_PATH)/*.cpp)
TOOLS := $(TOOL_SRC:.cpp=)
SRCS = $(NNTPCHAN_SRC) $(MUSTACHE_SRC) $(TOOL_SRC)
SRCS = $(NNTPCHAN_SRC) $(TOOL_SRC)
OBJ := $(NNTPCHAN_OBJ)
OBJ += $(MUSTACHE_OBJ)
TEST = $(REPO)/test
DAEMON_SRC = $(REPO)/daemon
PKGS := libsodium
ifeq ($(shell uname -s) "FreeBSD")
SODIUM_INC = /usr/local/include
SODIUM_LIB = /usr/local/lib/libsodium.a
else
SODIUM_INC = $(shell pkg-config --cflags libsodium)
SODIUM_LIB = $(shell pkg-config --libs --static libsodium)
endif
LD_FLAGS := $(shell pkg-config --libs $(PKGS)) -lstdc++fs
INC_FLAGS := $(shell pkg-config --cflags $(PKGS)) -I$(HEADERS_PATH)
LD_FLAGS := -lstdc++fs $(SODIUM_LIB)
INC_FLAGS := -I$(HEADERS_PATH) $(SODIUM_INC)
REQUIRED_CXXFLAGS = -std=c++17 -Wall -Wextra -Werror -pedantic $(INC_FLAGS)
DEBUG = 1
@ -44,9 +42,8 @@ endif
CXXFLAGS += $(REQUIRED_CXXFLAGS)
NNTPCHAN_LIB = $(REPO)/libnntpchan.a
MUSTACHE_LIB = $(REPO)/libmustache.a
LIBS = $(NNTPCHAN_LIB) $(MUSTACHE_LIB)
LIBS = $(NNTPCHAN_LIB)
EXE = $(REPO)/nntpd
@ -58,9 +55,6 @@ format:
build: $(EXE) tools
$(MUSTACHE_LIB): $(MUSTACHE_OBJ)
$(AR) -r $(MUSTACHE_LIB) $(MUSTACHE_OBJ)
$(NNTPCHAN_LIB): $(NNTPCHAN_OBJ)
$(AR) -r $(NNTPCHAN_LIB) $(NNTPCHAN_OBJ)

10
contrib/backends/nntpchan-daemon/README.md
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@ -6,14 +6,14 @@ requirements:
* C++17 compiler
* pkg-config
* libsodium 1.x
* boost variant (for now)
* GNU Make
building:
building on freebsd:
$ gmake
building on Linux:
$ make

113
contrib/backends/nntpchan-daemon/include/mstch/mstch.hpp
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@ -1,113 +0,0 @@
#pragma once
#include <vector>
#include <map>
#include <string>
#include <memory>
#include <functional>
#include <boost/variant.hpp>
namespace mstch {
struct config {
static std::function<std::string(const std::string&)> escape;
};
namespace internal {
template<class N>
class object_t {
public:
const N& at(const std::string& name) const {
cache[name] = (methods.at(name))();
return cache[name];
}
bool has(const std::string name) const {
return methods.count(name) != 0;
}
protected:
template<class S>
void register_methods(S* s, std::map<std::string,N(S::*)()> methods) {
for(auto& item: methods)
this->methods.insert({item.first, std::bind(item.second, s)});
}
private:
std::map<std::string, std::function<N()>> methods;
mutable std::map<std::string, N> cache;
};
template<class T, class N>
class is_fun {
private:
using not_fun = char;
using fun_without_args = char[2];
using fun_with_args = char[3];
template <typename U, U> struct really_has;
template <typename C> static fun_without_args& test(
really_has<N(C::*)() const, &C::operator()>*);
template <typename C> static fun_with_args& test(
really_has<N(C::*)(const std::string&) const,
&C::operator()>*);
template <typename> static not_fun& test(...);
public:
static bool const no_args = sizeof(test<T>(0)) == sizeof(fun_without_args);
static bool const has_args = sizeof(test<T>(0)) == sizeof(fun_with_args);
};
template<class N>
using node_renderer = std::function<std::string(const N& n)>;
template<class N>
class lambda_t {
public:
template<class F>
lambda_t(F f, typename std::enable_if<is_fun<F, N>::no_args>::type* = 0):
fun([f](node_renderer<N> renderer, const std::string&) {
return renderer(f());
})
{
}
template<class F>
lambda_t(F f, typename std::enable_if<is_fun<F, N>::has_args>::type* = 0):
fun([f](node_renderer<N> renderer, const std::string& text) {
return renderer(f(text));
})
{
}
std::string operator()(node_renderer<N> renderer,
const std::string& text = "") const
{
return fun(renderer, text);
}
private:
std::function<std::string(node_renderer<N> renderer, const std::string&)> fun;
};
}
using node = boost::make_recursive_variant<
std::nullptr_t, std::string, int, double, bool,
internal::lambda_t<boost::recursive_variant_>,
std::shared_ptr<internal::object_t<boost::recursive_variant_>>,
std::map<const std::string, boost::recursive_variant_>,
std::vector<boost::recursive_variant_>>::type;
using object = internal::object_t<node>;
using lambda = internal::lambda_t<node>;
using map = std::map<const std::string, node>;
using array = std::vector<node>;
std::string render(
const std::string& tmplt,
const node& root,
const std::map<std::string,std::string>& partials =
std::map<std::string,std::string>());
}

8
contrib/backends/nntpchan-daemon/include/nntpchan/model.hpp
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@ -26,7 +26,13 @@ typedef std::tuple<PostHeader, PostBody, Attachments> Post;
// a thread (many posts in post order)
typedef std::vector<Post> Thread;
// a board page is many threads in bump order
typedef std::vector<Thread> BoardPage;
struct BoardPage
{
std::vector<Thread> threads = {};
std::string name = "";
uint32_t pageno = 0;
};
static inline const std::string &GetFilename(const PostAttachment &att) { return std::get<0>(att); }

9
contrib/backends/nntpchan-daemon/include/nntpchan/template_engine.hpp
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@ -12,13 +12,16 @@ namespace nntpchan
struct TemplateEngine
{
typedef std::map<std::string, std::variant<nntpchan::model::Model, std::string>> Args_t;
virtual bool WriteTemplate(const fs::path &template_fpath, const Args_t &args, const FileHandle_ptr &out) = 0;
virtual ~TemplateEngine() {};
virtual bool WriteBoardPage(const nntpchan::model::BoardPage & page, const FileHandle_ptr &out) = 0;
virtual bool WriteThreadPage(const nntpchan::model::Thread & thread, const FileHandle_ptr &out) = 0;
};
TemplateEngine *CreateTemplateEngine(const std::string &dialect);
typedef std::unique_ptr<TemplateEngine> TemplateEngine_ptr;
TemplateEngine * CreateTemplateEngine(const std::string &dialect);
}
#endif

18
contrib/backends/nntpchan-daemon/libmustache/mstch.cpp
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@ -1,18 +0,0 @@
#include <iostream>
#include "mstch/mstch.hpp"
#include "render_context.hpp"
using namespace mstch;
std::function<std::string(const std::string &)> mstch::config::escape;
std::string mstch::render(const std::string &tmplt, const node &root,
const std::map<std::string, std::string> &partials)
{
std::map<std::string, template_type> partial_templates;
for (auto &partial : partials)
partial_templates.insert({partial.first, {partial.second}});
return render_context(root, partial_templates).render(tmplt);
}

62
contrib/backends/nntpchan-daemon/libmustache/render_context.cpp
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@ -1,62 +0,0 @@
#include "render_context.hpp"
#include "state/outside_section.hpp"
#include "visitor/get_token.hpp"
using namespace mstch;
const mstch::node render_context::null_node;
render_context::push::push(render_context &context, const mstch::node &node) : m_context(context)
{
context.m_nodes.emplace_front(node);
context.m_node_ptrs.emplace_front(&node);
context.m_state.push(std::unique_ptr<render_state>(new outside_section));
}
render_context::push::~push()
{
m_context.m_nodes.pop_front();
m_context.m_node_ptrs.pop_front();
m_context.m_state.pop();
}
std::string render_context::push::render(const template_type &templt) { return m_context.render(templt); }
render_context::render_context(const mstch::node &node, const std::map<std::string, template_type> &partials)
: m_partials(partials), m_nodes(1, node), m_node_ptrs(1, &node)
{
m_state.push(std::unique_ptr<render_state>(new outside_section));
}
const mstch::node &render_context::find_node(const std::string &token, std::list<node const *> current_nodes)
{
if (token != "." && token.find('.') != std::string::npos)
return find_node(token.substr(token.rfind('.') + 1),
{&find_node(token.substr(0, token.rfind('.')), current_nodes)});
else
for (auto &node : current_nodes)
if (visit(has_token(token), *node))
return visit(get_token(token, *node), *node);
return null_node;
}
const mstch::node &render_context::get_node(const std::string &token) { return find_node(token, m_node_ptrs); }
std::string render_context::render(const template_type &templt, const std::string &prefix)
{
std::string output;
bool prev_eol = true;
for (auto &token : templt)
{
if (prev_eol && prefix.length() != 0)
output += m_state.top()->render(*this, {prefix});
output += m_state.top()->render(*this, token);
prev_eol = token.eol();
}
return output;
}
std::string render_context::render_partial(const std::string &partial_name, const std::string &prefix)
{
return m_partials.count(partial_name) ? render(m_partials.at(partial_name), prefix) : "";
}

47
contrib/backends/nntpchan-daemon/libmustache/render_context.hpp
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@ -1,47 +0,0 @@
#pragma once
#include <deque>
#include <list>
#include <sstream>
#include <stack>
#include <string>
#include "state/render_state.hpp"
#include "template_type.hpp"
#include <mstch/mstch.hpp>
namespace mstch
{
class render_context
{
public:
class push
{
public:
push(render_context &context, const mstch::node &node = {});
~push();
std::string render(const template_type &templt);
private:
render_context &m_context;
};
render_context(const mstch::node &node, const std::map<std::string, template_type> &partials);
const mstch::node &get_node(const std::string &token);
std::string render(const template_type &templt, const std::string &prefix = "");
std::string render_partial(const std::string &partial_name, const std::string &prefix);
template <class T, class... Args> void set_state(Args &&... args)
{
m_state.top() = std::unique_ptr<render_state>(new T(std::forward<Args>(args)...));
}
private:
static const mstch::node null_node;
const mstch::node &find_node(const std::string &token, std::list<node const *> current_nodes);
std::map<std::string, template_type> m_partials;
std::deque<mstch::node> m_nodes;
std::list<const mstch::node *> m_node_ptrs;
std::stack<std::unique_ptr<render_state>> m_state;
};
}

36
contrib/backends/nntpchan-daemon/libmustache/state/in_section.cpp
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@ -1,36 +0,0 @@
#include "in_section.hpp"
#include "../visitor/is_node_empty.hpp"
#include "../visitor/render_section.hpp"
#include "outside_section.hpp"
using namespace mstch;
in_section::in_section(type type, const token &start_token)
: m_type(type), m_start_token(start_token), m_skipped_openings(0)
{
}
std::string in_section::render(render_context &ctx, const token &token)
{
if (token.token_type() == token::type::section_close)
if (token.name() == m_start_token.name() && m_skipped_openings == 0)
{
auto &node = ctx.get_node(m_start_token.name());
std::string out;
if (m_type == type::normal && !visit(is_node_empty(), node))
out = visit(render_section(ctx, m_section, m_start_token.delims()), node);
else if (m_type == type::inverted && visit(is_node_empty(), node))
out = render_context::push(ctx).render(m_section);
ctx.set_state<outside_section>();
return out;
}
else
m_skipped_openings--;
else if (token.token_type() == token::type::inverted_section_open || token.token_type() == token::type::section_open)
m_skipped_openings++;
m_section << token;
return "";
}

29
contrib/backends/nntpchan-daemon/libmustache/state/in_section.hpp
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@ -1,29 +0,0 @@
#pragma once
#include <sstream>
#include <vector>
#include "../template_type.hpp"
#include "render_state.hpp"
namespace mstch
{
class in_section : public render_state
{
public:
enum class type
{
inverted,
normal
};
in_section(type type, const token &start_token);
std::string render(render_context &context, const token &token) override;
private:
const type m_type;
const token &m_start_token;
template_type m_section;
int m_skipped_openings;
};
}

32
contrib/backends/nntpchan-daemon/libmustache/state/outside_section.cpp
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@ -1,32 +0,0 @@
#include "outside_section.hpp"
#include "../render_context.hpp"
#include "../visitor/render_node.hpp"
#include "in_section.hpp"
using namespace mstch;
std::string outside_section::render(render_context &ctx, const token &token)
{
using flag = render_node::flag;
switch (token.token_type())
{
case token::type::section_open:
ctx.set_state<in_section>(in_section::type::normal, token);
break;
case token::type::inverted_section_open:
ctx.set_state<in_section>(in_section::type::inverted, token);
break;
case token::type::variable:
return visit(render_node(ctx, flag::escape_html), ctx.get_node(token.name()));
case token::type::unescaped_variable:
return visit(render_node(ctx, flag::none), ctx.get_node(token.name()));
case token::type::text:
return token.raw();
case token::type::partial:
return ctx.render_partial(token.name(), token.partial_prefix());
default:
break;
}
return "";
}

13
contrib/backends/nntpchan-daemon/libmustache/state/outside_section.hpp
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@ -1,13 +0,0 @@
#pragma once
#include "render_state.hpp"
namespace mstch
{
class outside_section : public render_state
{
public:
std::string render(render_context &context, const token &token) override;
};
}

18
contrib/backends/nntpchan-daemon/libmustache/state/render_state.hpp
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@ -1,18 +0,0 @@
#pragma once
#include <memory>
#include "../token.hpp"
namespace mstch
{
class render_context;
class render_state
{
public:
virtual ~render_state() {}
virtual std::string render(render_context &context, const token &token) = 0;
};
}

110
contrib/backends/nntpchan-daemon/libmustache/template_type.cpp
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@ -1,110 +0,0 @@
#include "template_type.hpp"
using namespace mstch;
template_type::template_type(const std::string &str, const delim_type &delims)
: m_open(delims.first), m_close(delims.second)
{
tokenize(str);
strip_whitespace();
}
template_type::template_type(const std::string &str) : m_open("{{"), m_close("}}")
{
tokenize(str);
strip_whitespace();
}
void template_type::process_text(citer begin, citer end)
{
if (begin == end)
return;
auto start = begin;
for (auto it = begin; it != end; ++it)
if (*it == '\n' || it == end - 1)
{
m_tokens.push_back({{start, it + 1}});
start = it + 1;
}
}
void template_type::tokenize(const std::string &tmp)
{
citer beg = tmp.begin();
auto npos = std::string::npos;
for (std::size_t cur_pos = 0; cur_pos < tmp.size();)
{
auto open_pos = tmp.find(m_open, cur_pos);
auto close_pos = tmp.find(m_close, open_pos == npos ? open_pos : open_pos + 1);
if (close_pos != npos && open_pos != npos)
{
if (*(beg + open_pos + m_open.size()) == '{' && *(beg + close_pos + m_close.size()) == '}')
++close_pos;
process_text(beg + cur_pos, beg + open_pos);
cur_pos = close_pos + m_close.size();
m_tokens.push_back({{beg + open_pos, beg + close_pos + m_close.size()}, m_open.size(), m_close.size()});
if (cur_pos == tmp.size())
{
m_tokens.push_back({{""}});
m_tokens.back().eol(true);
}
if (*(beg + open_pos + m_open.size()) == '=' && *(beg + close_pos - 1) == '=')
{
auto tok_beg = beg + open_pos + m_open.size() + 1;
auto tok_end = beg + close_pos - 1;
auto front_skip = first_not_ws(tok_beg, tok_end);
auto back_skip = first_not_ws(reverse(tok_end), reverse(tok_beg));
m_open = {front_skip, beg + tmp.find(' ', front_skip - beg)};
m_close = {beg + tmp.rfind(' ', back_skip - beg) + 1, back_skip + 1};
}
}
else
{
process_text(beg + cur_pos, tmp.end());
cur_pos = close_pos;
}
}
}
void template_type::strip_whitespace()
{
auto line_begin = m_tokens.begin();
bool has_tag = false, non_space = false;
for (auto it = m_tokens.begin(); it != m_tokens.end(); ++it)
{
auto type = (*it).token_type();
if (type != token::type::text && type != token::type::variable && type != token::type::unescaped_variable)
has_tag = true;
else if (!(*it).ws_only())
non_space = true;
if ((*it).eol())
{
if (has_tag && !non_space)
{
store_prefixes(line_begin);
auto c = line_begin;
for (bool end = false; !end; (*c).ws_only() ? c = m_tokens.erase(c) : ++c)
if ((end = (*c).eol()))
it = c - 1;
}
non_space = has_tag = false;
line_begin = it + 1;
}
}
}
void template_type::store_prefixes(std::vector<token>::iterator beg)
{
for (auto cur = beg; !(*cur).eol(); ++cur)
if ((*cur).token_type() == token::type::partial && cur != beg && (*(cur - 1)).ws_only())
(*cur).partial_prefix((*(cur - 1)).raw());
}

31
contrib/backends/nntpchan-daemon/libmustache/template_type.hpp
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@ -1,31 +0,0 @@
#pragma once
#include <string>
#include <vector>
#include "token.hpp"
#include "utils.hpp"
namespace mstch
{
class template_type
{
public:
template_type() = default;
template_type(const std::string &str);
template_type(const std::string &str, const delim_type &delims);
std::vector<token>::const_iterator begin() const { return m_tokens.begin(); }
std::vector<token>::const_iterator end() const { return m_tokens.end(); }
void operator<<(const token &token) { m_tokens.push_back(token); }
private:
std::vector<token> m_tokens;
std::string m_open;
std::string m_close;
void strip_whitespace();
void process_text(citer beg, citer end);
void tokenize(const std::string &tmp);
void store_prefixes(std::vector<token>::iterator beg);
};
}

57
contrib/backends/nntpchan-daemon/libmustache/token.cpp
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@ -1,57 +0,0 @@
#include "token.hpp"
#include "utils.hpp"
using namespace mstch;
token::type token::token_info(char c)
{
switch (c)
{
case '>':
return type::partial;
case '^':
return type::inverted_section_open;
case '/':
return type::section_close;
case '&':
return type::unescaped_variable;
case '#':
return type::section_open;
case '!':
return type::comment;
default:
return type::variable;
}
}
token::token(const std::string &str, std::size_t left, std::size_t right) : m_raw(str), m_eol(false), m_ws_only(false)
{
if (left != 0 && right != 0)
{
if (str[left] == '=' && str[str.size() - right - 1] == '=')
{
m_type = type::delimiter_change;
}
else if (str[left] == '{' && str[str.size() - right - 1] == '}')
{
m_type = type::unescaped_variable;
m_name = {first_not_ws(str.begin() + left + 1, str.end() - right),
first_not_ws(str.rbegin() + 1 + right, str.rend() - left) + 1};
}
else
{
auto c = first_not_ws(str.begin() + left, str.end() - right);
m_type = token_info(*c);
if (m_type != type::variable)
c = first_not_ws(c + 1, str.end() - right);
m_name = {c, first_not_ws(str.rbegin() + right, str.rend() - left) + 1};
m_delims = {{str.begin(), str.begin() + left}, {str.end() - right, str.end()}};
}
}
else
{
m_type = type::text;
m_eol = (str.size() > 0 && str[str.size() - 1] == '\n');
m_ws_only = (str.find_first_not_of(" \r\n\t") == std::string::npos);
}
}

46
contrib/backends/nntpchan-daemon/libmustache/token.hpp
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@ -1,46 +0,0 @@
#pragma once
#include <string>
namespace mstch
{
using delim_type = std::pair<std::string, std::string>;
class token
{
public:
enum class type
{
text,
variable,
section_open,
section_close,
inverted_section_open,
unescaped_variable,
comment,
partial,
delimiter_change
};
token(const std::string &str, std::size_t left = 0, std::size_t right = 0);
type token_type() const { return m_type; };
const std::string &raw() const { return m_raw; };
const std::string &name() const { return m_name; };
const std::string &partial_prefix() const { return m_partial_prefix; };
const delim_type &delims() const { return m_delims; };
void partial_prefix(const std::string &p_partial_prefix) { m_partial_prefix = p_partial_prefix; };
bool eol() const { return m_eol; }
void eol(bool eol) { m_eol = eol; }
bool ws_only() const { return m_ws_only; }
private:
type m_type;
std::string m_name;
std::string m_raw;
std::string m_partial_prefix;
delim_type m_delims;
bool m_eol;
bool m_ws_only;
type token_info(char c);
};
}

61
contrib/backends/nntpchan-daemon/libmustache/utils.cpp
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@ -1,61 +0,0 @@
#include "utils.hpp"
#include "mstch/mstch.hpp"
mstch::citer mstch::first_not_ws(mstch::citer begin, mstch::citer end)
{
for (auto it = begin; it != end; ++it)
if (*it != ' ')
return it;
return end;
}
mstch::citer mstch::first_not_ws(mstch::criter begin, mstch::criter end)
{
for (auto rit = begin; rit != end; ++rit)
if (*rit != ' ')
return --(rit.base());
return --(end.base());
}
mstch::criter mstch::reverse(mstch::citer it) { return std::reverse_iterator<mstch::citer>(it); }
std::string mstch::html_escape(const std::string &str)
{
if (mstch::config::escape)
return mstch::config::escape(str);
std::string out;
citer start = str.begin();
auto add_escape = [&out, &start](const std::string &escaped, citer &it) {
out += std::string{start, it} + escaped;
start = it + 1;
};
for (auto it = str.begin(); it != str.end(); ++it)
switch (*it)
{
case '&':
add_escape("&amp;", it);
break;
case '\'':
add_escape("&#39;", it);
break;
case '"':
add_escape("&quot;", it);
break;
case '<':
add_escape("&lt;", it);
break;
case '>':
add_escape("&gt;", it);
break;
case '/':
add_escape("&#x2F;", it);
break;
default:
break;
}
return out + std::string{start, str.end()};
}

21
contrib/backends/nntpchan-daemon/libmustache/utils.hpp
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@ -1,21 +0,0 @@
#pragma once
#include <boost/variant/apply_visitor.hpp>
#include <string>
namespace mstch
{
using citer = std::string::const_iterator;
using criter = std::string::const_reverse_iterator;
citer first_not_ws(citer begin, citer end);
citer first_not_ws(criter begin, criter end);
std::string html_escape(const std::string &str);
criter reverse(citer it);
template <class... Args> auto visit(Args &&... args) -> decltype(boost::apply_visitor(std::forward<Args>(args)...))
{
return boost::apply_visitor(std::forward<Args>(args)...);
}
}

26
contrib/backends/nntpchan-daemon/libmustache/visitor/get_token.hpp
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@ -1,26 +0,0 @@
#pragma once
#include <boost/variant/static_visitor.hpp>
#include "has_token.hpp"
#include "mstch/mstch.hpp"
namespace mstch
{
class get_token : public boost::static_visitor<const mstch::node &>
{
public:
get_token(const std::string &token, const mstch::node &node) : m_token(token), m_node(node) {}
template <class T> const mstch::node &operator()(const T &) const { return m_node; }
const mstch::node &operator()(const map &map) const { return map.at(m_token); }
const mstch::node &operator()(const std::shared_ptr<object> &object) const { return object->at(m_token); }
private:
const std::string &m_token;
const mstch::node &m_node;
};
}

24
contrib/backends/nntpchan-daemon/libmustache/visitor/has_token.hpp
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@ -1,24 +0,0 @@
#pragma once
#include <boost/variant/static_visitor.hpp>
#include "mstch/mstch.hpp"
namespace mstch
{
class has_token : public boost::static_visitor<bool>
{
public:
has_token(const std::string &token) : m_token(token) {}
template <class T> bool operator()(const T &) const { return m_token == "."; }
bool operator()(const map &map) const { return map.count(m_token) == 1; }
bool operator()(const std::shared_ptr<object> &object) const { return object->has(m_token); }
private:
const std::string &m_token;
};
}

27
contrib/backends/nntpchan-daemon/libmustache/visitor/is_node_empty.hpp
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@ -1,27 +0,0 @@
#pragma once
#include <boost/variant/static_visitor.hpp>
#include "mstch/mstch.hpp"
namespace mstch
{
class is_node_empty : public boost::static_visitor<bool>
{
public:
template <class T> bool operator()(const T &) const { return false; }
bool operator()(const std::nullptr_t &) const { return true; }
bool operator()(const int &value) const { return value == 0; }
bool operator()(const double &value) const { return value == 0; }
bool operator()(const bool &value) const { return !value; }
bool operator()(const std::string &value) const { return value == ""; }
bool operator()(const array &array) const { return array.size() == 0; }
};
}

52
contrib/backends/nntpchan-daemon/libmustache/visitor/render_node.hpp
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@ -1,52 +0,0 @@
#pragma once
#include <boost/variant/static_visitor.hpp>
#include <sstream>
#include "../render_context.hpp"
#include "../utils.hpp"
#include "mstch/mstch.hpp"
namespace mstch
{
class render_node : public boost::static_visitor<std::string>
{
public:
enum class flag
{
none,
escape_html
};
render_node(render_context &ctx, flag p_flag = flag::none) : m_ctx(ctx), m_flag(p_flag) {}
template <class T> std::string operator()(const T &) const { return ""; }
std::string operator()(const int &value) const { return std::to_string(value); }
std::string operator()(const double &value) const
{
std::stringstream ss;
ss << value;
return ss.str();
}
std::string operator()(const bool &value) const { return value ? "true" : "false"; }
std::string operator()(const lambda &value) const
{
template_type interpreted{value([this](const mstch::node &n) { return visit(render_node(m_ctx), n); })};
auto rendered = render_context::push(m_ctx).render(interpreted);
return (m_flag == flag::escape_html) ? html_escape(rendered) : rendered;
}
std::string operator()(const std::string &value) const
{
return (m_flag == flag::escape_html) ? html_escape(value) : value;
}
private:
render_context &m_ctx;
flag m_flag;
};
}

58
contrib/backends/nntpchan-daemon/libmustache/visitor/render_section.hpp
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@ -1,58 +0,0 @@
#pragma once
#include <boost/variant/static_visitor.hpp>
#include "../render_context.hpp"
#include "../utils.hpp"
#include "mstch/mstch.hpp"
#include "render_node.hpp"
namespace mstch
{
class render_section : public boost::static_visitor<std::string>
{
public:
enum class flag
{
none,
keep_array
};
render_section(render_context &ctx, const template_type &section, const delim_type &delims, flag p_flag = flag::none)
: m_ctx(ctx), m_section(section), m_delims(delims), m_flag(p_flag)
{
}
template <class T> std::string operator()(const T &t) const
{
return render_context::push(m_ctx, t).render(m_section);
}
std::string operator()(const lambda &fun) const
{
std::string section_str;
for (auto &token : m_section)
section_str += token.raw();
template_type interpreted{fun([this](const mstch::node &n) { return visit(render_node(m_ctx), n); }, section_str),
m_delims};
return render_context::push(m_ctx).render(interpreted);
}
std::string operator()(const array &array) const
{
std::string out;
if (m_flag == flag::keep_array)
return render_context::push(m_ctx, array).render(m_section);
else
for (auto &item : array)
out += visit(render_section(m_ctx, m_section, m_delims, flag::keep_array), item);
return out;
}
private:
render_context &m_ctx;
const template_type &m_section;
const delim_type &m_delims;
flag m_flag;
};
}

16
contrib/backends/nntpchan-daemon/libnntpchan/staticfile_frontend.cpp
View File

@ -118,12 +118,10 @@ void StaticFileFrontend::ProcessNewMessage(const fs::path &fpath)
std::clog << "cannot find thread with root " << rootmsgid << std::endl;
return;
}
TemplateEngine::Args_t thread_args;
thread_args["posts"] = thread;
if (m_TemplateEngine)
{
FileHandle_ptr out = OpenFile(threadFilePath, eWrite);
if (!out || !m_TemplateEngine->WriteTemplate("thread.mustache", thread_args, out))
if (!out || !m_TemplateEngine->WriteThreadPage(thread, out))
{
std::clog << "failed to write " << threadFilePath << std::endl;
return;
@ -135,27 +133,19 @@ void StaticFileFrontend::ProcessNewMessage(const fs::path &fpath)
uint32_t pageno = 0;
while (pageno < m_Pages)
{
page.clear();
page.threads.clear();
if (!m_MessageDB->LoadBoardPage(page, name, 10, m_Pages))
{
std::clog << "cannot load board page " << pageno << " for " << name << std::endl;
break;
}
TemplateEngine::Args_t page_args;
page_args["group"] = name;
page_args["threads"] = page;
page_args["pageno"] = std::to_string(pageno);
if (pageno)
page_args["prev_pageno"] = std::to_string(pageno - 1);
if (pageno + 1 < m_Pages)
page_args["next_pageno"] = std::to_string(pageno + 1);
fs::path boardPageFilename(name + "-" + std::to_string(pageno) + ".html");
if (m_TemplateEngine)
{
fs::path outfile = m_OutDir / boardPageFilename;
FileHandle_ptr out = OpenFile(outfile, eWrite);
if (out)
m_TemplateEngine->WriteTemplate("board.mustache", page_args, out);
m_TemplateEngine->WriteBoardPage(page, out);
else
std::clog << "failed to open board page " << outfile << std::endl;
}

209
contrib/backends/nntpchan-daemon/libnntpchan/template_engine.cpp
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@ -1,165 +1,92 @@
#include <iostream>
#include <mstch/mstch.hpp>
#include <nntpchan/sanitize.hpp>
#include <nntpchan/template_engine.hpp>
#include <sstream>
namespace nntpchan
{
template <class... Ts> struct overloaded : Ts...
struct StdTemplateEngine : public TemplateEngine
{
using Ts::operator()...;
};
template <class... Ts> overloaded(Ts...)->overloaded<Ts...>;
namespace mustache = mstch;
static mustache::map post_to_map(const nntpchan::model::Post &post)
{
mustache::map m;
mustache::array attachments;
mustache::map h;
for (const auto &att : nntpchan::model::GetAttachments(post))
{
mustache::map a;
a["filename"] = nntpchan::model::GetFilename(att);
a["hexdigest"] = nntpchan::model::GetHexDigest(att);
a["thumbnail"] = nntpchan::model::GetThumbnail(att);
attachments.push_back(a);
}
for (const auto &item : nntpchan::model::GetHeader(post))
{
mustache::array vals;
for (const auto &v : item.second)
vals.push_back(v);
h[item.first] = vals;
}
m["attachments"] = attachments;
m["message"] = nntpchan::model::GetBody(post);
m["header"] = h;
return m;
}
static mustache::map thread_to_map(const nntpchan::model::Thread &t)
{
mustache::map thread;
mustache::array posts;
for (const auto &post : t)
{
posts.push_back(post_to_map(post));
}
auto &opHeader = nntpchan::model::GetHeader(t[0]);
thread["title"] = nntpchan::model::HeaderIFind(opHeader, "subject", "None")[0];
thread["posts"] = posts;
return thread;
}
struct MustacheTemplateEngine : public TemplateEngine
{
struct Impl
struct RenderContext
{
Impl(const std::map<std::string, std::string> &partials) : m_partials(partials) {}
bool ParseTemplate(const FileHandle_ptr &in)
bool Load(const fs::path & path)
{
std::stringstream str;
std::string line;
while (std::getline(*in, line))
str << line << "\n";
m_tmplString = str.str();
return in->eof();
}
bool RenderFile(const Args_t &args, const FileHandle_ptr &out)
// clear out previous data
m_Data.clear();
// open file
std::ifstream f;
f.open(path);
if(f.is_open())
{
mustache::map obj;
for (const auto &item : args)
for(std::string line; std::getline(f, line, '\n');)
{
std::visit(overloaded{[&obj, item](const nntpchan::model::Model &m) {
std::visit(overloaded{[&obj, item](const nntpchan::model::BoardPage &p) {
mustache::array threads;
for (const auto &thread : p)
{
threads.push_back(thread_to_map(thread));
}
obj[item.first] = threads;
},
[&obj, item](const nntpchan::model::Thread &t) {
obj[item.first] = thread_to_map(t);
}},
m);
},
[&obj, item](const std::string &str) { obj[item.first] = str; }},
item.second);
}
std::string str = mustache::render(m_tmplString, obj);
out->write(str.c_str(), str.size());
out->flush();
return !out->fail();
}
std::string m_tmplString;
const std::map<std::string, std::string> &m_partials;
};
virtual bool WriteTemplate(const fs::path &fpath, const Args_t &args, const FileHandle_ptr &out)
{
auto templFile = OpenFile(fpath, eRead);
if (!templFile)
{
std::clog << "no such template at " << fpath << std::endl;
return false;
}
std::map<std::string, std::string> partials;
if (!LoadPartials(fpath.parent_path(), partials))
{
std::clog << "failed to load partials" << std::endl;
return false;
}
Impl impl(partials);
if (impl.ParseTemplate(templFile))
{
return impl.RenderFile(args, out);
}
std::clog << "failed to parse template " << fpath << std::endl;
return false;
}
bool LoadPartials(fs::path dir, std::map<std::string, std::string> &partials)
{
const auto partial_files = {"header", "footer"};
for (const auto &fname : partial_files)
{
auto file = OpenFile(dir / fs::path(fname + std::string(".html")), eRead);
if (!file)
{
std::clog << "no such partial: " << fname << std::endl;
return false;
}
std::string line;
std::stringstream input;
while (std::getline(*file, line))
input << line << "\n";
partials[fname] = input.str();
m_Data += line + "\n";
}
return true;
}
else
return false;
}
virtual bool Render(const FileHandle_ptr & out) const = 0;
std::string m_Data;
};
struct BoardRenderContext : public RenderContext
{
const nntpchan::model::BoardPage & m_Page;
BoardRenderContext(const nntpchan::model::BoardPage & page) : m_Page(page) {};
virtual bool Render(const FileHandle_ptr & out) const
{
*out << m_Data;
return false;
}
};
struct ThreadRenderContext : public RenderContext
{
const nntpchan::model::Thread & m_Thread;
ThreadRenderContext(const nntpchan::model::Thread & thread) : m_Thread(thread) {};
virtual bool Render(const FileHandle_ptr & out) const
{
*out << m_Data;
return false;
}
};
bool WriteBoardPage(const nntpchan::model::BoardPage & page, const FileHandle_ptr & out)
{
BoardRenderContext ctx(page);
if(ctx.Load("board.html"))
{
return ctx.Render(out);
}
return false;
}
bool WriteThreadPage(const nntpchan::model::Thread & thread, const FileHandle_ptr & out)
{
ThreadRenderContext ctx(thread);
if(ctx.Load("thread.html"))
{
return ctx.Render(out);
}
return false;
}
};
TemplateEngine *CreateTemplateEngine(const std::string &dialect)
{
auto d = ToLower(dialect);
if (d == "mustache")
return new MustacheTemplateEngine;
if (d == "std")
return new StdTemplateEngine;
else
return nullptr;
}