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readline_buffer: Avoid consecutive duplicates in the history

This commit is contained in:
codesoap 2020-12-12 23:18:27 +01:00
parent ebdc617408
commit f2ad539f5f
1 changed files with 16 additions and 2 deletions
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18
contrib/epee/src/readline_buffer.cpp
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@ -6,6 +6,7 @@
#include <boost/thread/lock_guard.hpp>
#include <boost/algorithm/string.hpp>
static bool same_as_last_line(const std::string&);
static void install_line_handler();
static void remove_line_handler();
@ -175,8 +176,11 @@ static void handle_line(char* line)
boost::trim_right(test_line);
if(!test_line.empty())
{
add_history(test_line.c_str());
history_set_pos(history_length);
if (!same_as_last_line(test_line))
{
add_history(test_line.c_str());
history_set_pos(history_length);
}
if (test_line == "exit" || test_line == "q")
exit = true;
}
@ -192,6 +196,16 @@ static void handle_line(char* line)
return;
}
// same_as_last_line returns true, if the last line in the history is
// equal to test_line.
static bool same_as_last_line(const std::string& test_line)
{
// Note that state->offset == state->length, when a new line was entered.
HISTORY_STATE* state = history_get_history_state();
return state->length > 0
&& test_line.compare(state->entries[state->length-1]->line) == 0;
}
static char* completion_matches(const char* text, int state)
{
static size_t list_index;