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nestlog: + terminal colors for entry/exit/code location

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This commit is contained in:
Roland Conybeare 2023-09-15 13:24:02 -04:00
commit fd2be2a4ae
6 changed files with 265 additions and 12 deletions
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37
include/nestlog/log_state.hpp
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@ -6,11 +6,17 @@
#include "log_streambuf.hpp"
#include "pad.hpp"
#include "filename.hpp"
#include "code_location.hpp"
#include <ostream>
#include <sstream>
#include <memory> // for std::unique_ptr
namespace xo {
enum EntryExit {
EE_Entry,
EE_Exit
};
// track per-thread state associated with nesting logger
//
template <typename CharT, typename Traits>
@ -55,7 +61,7 @@ namespace xo {
void entryexit_aux(function_style style,
std::string_view name1,
std::string_view name2,
char label_char);
EntryExit entryexit);
private:
/* current nesting level for this thread */
@ -129,21 +135,37 @@ namespace xo {
state_impl<CharT, Traits>::entryexit_aux(function_style style,
std::string_view name1,
std::string_view name2,
char label_char)
EntryExit entryexit)
{
log_streambuf_type * sbuf = this->p_sbuf_phase1_.get();
sbuf->reset_stream();
this->indent(' ');
char ee_label = '\0';
std::uint32_t fn_color = 0;
color_encoding encoding = log_config::encoding;
/* mnemonic for scope entry/exit */
this->ss_ << label_char;
switch(entryexit) {
case EE_Entry:
ee_label = '+';
fn_color = log_config::function_entry_color;
break;
case EE_Exit:
ee_label = '-';
fn_color = log_config::function_exit_color;
break;
}
this->ss_ << ee_label;
if (log_config::indent_width > 1)
this->ss_ << ' ';
/* scope name - note no trailing newline; expect .preamble()/.postamble() caller to supply */
this->ss_ << function_name(style, name1) << name2;
this->ss_ << function_name(style, encoding, fn_color, name1) << name2;
} /*entryexit_aux*/
template <typename CharT, typename Traits>
@ -152,7 +174,7 @@ namespace xo {
std::string_view name1,
std::string_view name2)
{
this->entryexit_aux(style, name1, name2, '+' /*label_char*/);
this->entryexit_aux(style, name1, name2, EE_Entry);
} /*preamble*/
template <typename CharT, typename Traits>
@ -161,7 +183,7 @@ namespace xo {
std::string_view name1,
std::string_view name2)
{
this->entryexit_aux(style, name1, name2, '-' /*label_char*/);
this->entryexit_aux(style, name1, name2, EE_Exit);
} /*postamble*/
template <typename CharT, typename Traits>
@ -241,7 +263,8 @@ namespace xo {
sbuf2->sputc(' ');
std::stringstream ss;
ss << "[" << basename(this->file_) << ":" << this->line_ << "]";
ss << code_location(this->file_, this->line_,
log_config::encoding, log_config::code_location_color);
std::string ss_str = std::move(ss.str()); /*c++20*/
sbuf2->sputn(ss_str.c_str(), ss_str.size());