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fix: print statistics placeholders fail in custom G-code (#16348)

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The G-code editor lists the Print Statistics placeholders for every
custom G-code field, but total_weight, used_filament, total_cost,
print_time, normal_print_time, silent_print_time,
total_wipe_tower_cost and total_wipe_tower_filament were only defined
for filename_format. Using one in custom G-code, including the File
header G-code, stopped slicing with "Not a variable name".

They are known only once the whole G-code is generated, so they use the
reserved-tag mechanism of print_time_sec and used_filament_length: the
placeholder parser gets a tag such as @TOTAL_WEIGHT@ and
GCodeProcessor::run_post_process() replaces it with the same value
filename_format gets, with numbers written to two decimals. The
per-tag replacement loops are folded into one helper. The running
extruded_* totals are unchanged.

Fixes #15320
Fixes #7870
This commit is contained in:
Ján Mišenko authored and GitHub committed 2026-10-16 16:30:05 -05:00
1 parent 6d40ec93f6
commit c6804fbb68
4 files changed
+122 -71
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src/libslic3r/GCode/GCodeProcessor.cpp
+47 -71
View File
@@ -120,7 +120,13 @@ const std::vector<std::string> GCodeProcessor::Reserved_Tags = {
"@PRINT_TIME_HOUR@",
"@PRINT_TIME_MINUTE@",
"@PRINT_TIME_SEC@",
"@USED_FILAMENT_LENGTH@"
"@USED_FILAMENT_LENGTH@",
"@NORMAL_PRINT_TIME@",
"@SILENT_PRINT_TIME@",
"@TOTAL_WEIGHT@",
"@TOTAL_COST@",
"@TOTAL_WIPE_TOWER_COST@",
"@TOTAL_WIPE_TOWER_FILAMENT@"
};
const std::vector<std::string> GCodeProcessor::Reserved_Tags_compatible = {
@@ -147,7 +153,13 @@ const std::vector<std::string> GCodeProcessor::Reserved_Tags_compatible = {
"@PRINT_TIME_HOUR@",
"@PRINT_TIME_MINUTE@",
"@PRINT_TIME_SEC@",
"@USED_FILAMENT_LENGTH@"
"@USED_FILAMENT_LENGTH@",
"@NORMAL_PRINT_TIME@",
"@SILENT_PRINT_TIME@",
"@TOTAL_WEIGHT@",
"@TOTAL_COST@",
"@TOTAL_WIPE_TOWER_COST@",
"@TOTAL_WIPE_TOWER_FILAMENT@"
};
@@ -1264,19 +1276,22 @@ void GCodeProcessor::run_post_process()
return ret;
};
// Process inline placeholders (print_time_total_sec, print_time_day, print_time_hour, print_time_minute, print_time_sec and used_filament_length)
// Process inline placeholders (print_time_*, used_filament_length and the print statistics known only after export)
auto process_inline_placeholders = [&](std::string& gcode_line) {
bool processed = false;
// Every inline placeholder contains '@', so a line without one has nothing to replace.
if (gcode_line.find('@') == std::string::npos)
return processed;
const std::string& print_time_total_placeholder = reserved_tag(ETags::Print_Time_Total_Sec_Placeholder);
const std::string& print_time_day_placeholder = reserved_tag(ETags::Print_Time_Day_Placeholder);
const std::string& print_time_hour_placeholder = reserved_tag(ETags::Print_Time_Hour_Placeholder);
const std::string& print_time_minute_placeholder = reserved_tag(ETags::Print_Time_Minute_Placeholder);
const std::string& print_time_sec_placeholder = reserved_tag(ETags::Print_Time_Sec_Placeholder);
const std::string& used_filament_placeholder = reserved_tag(ETags::Used_Filament_Length_Placeholder);
auto replace_tag = [&gcode_line, &processed](ETags tag, const std::string& value) {
const std::string& placeholder = reserved_tag(tag);
size_t pos = gcode_line.find(placeholder);
while (pos != std::string::npos) {
gcode_line.replace(pos, placeholder.length(), value);
processed = true;
pos = gcode_line.find(placeholder, pos + value.length());
}
};
double print_time_total_sec = m_time_processor.machines[static_cast<size_t>(PrintEstimatedStatistics::ETimeMode::Normal)].time;
if (print_time_total_sec < 0.0)
@@ -1289,70 +1304,31 @@ void GCodeProcessor::run_post_process()
int print_time_minute = (day_remainder_seconds % 3600) / 60;
int print_time_sec = day_remainder_seconds % 60;
// Replace print_time_total_sec
size_t pos = gcode_line.find(print_time_total_placeholder);
while (pos != std::string::npos) {
char buf[64];
sprintf(buf, "%.2f", print_time_total_sec);
gcode_line.replace(pos, print_time_total_placeholder.length(), buf);
processed = true;
pos = gcode_line.find(print_time_total_placeholder, pos + strlen(buf));
double total_filament_mm = 0.0;
for (const auto& mm : filament_mm) {
total_filament_mm += mm;
}
// Replace print_time_day
pos = gcode_line.find(print_time_day_placeholder);
while (pos != std::string::npos) {
char buf[64];
sprintf(buf, "%d", print_time_day);
gcode_line.replace(pos, print_time_day_placeholder.length(), buf);
processed = true;
pos = gcode_line.find(print_time_day_placeholder, pos + strlen(buf));
}
// Replace print_time_hour
pos = gcode_line.find(print_time_hour_placeholder);
while (pos != std::string::npos) {
char buf[64];
sprintf(buf, "%d", print_time_hour);
gcode_line.replace(pos, print_time_hour_placeholder.length(), buf);
processed = true;
pos = gcode_line.find(print_time_hour_placeholder, pos + strlen(buf));
}
// Replace print_time_minute
pos = gcode_line.find(print_time_minute_placeholder);
while (pos != std::string::npos) {
char buf[64];
sprintf(buf, "%d", print_time_minute);
gcode_line.replace(pos, print_time_minute_placeholder.length(), buf);
processed = true;
pos = gcode_line.find(print_time_minute_placeholder, pos + strlen(buf));
}
// Replace print_time_sec
pos = gcode_line.find(print_time_sec_placeholder);
while (pos != std::string::npos) {
char buf[64];
sprintf(buf, "%d", print_time_sec);
gcode_line.replace(pos, print_time_sec_placeholder.length(), buf);
processed = true;
pos = gcode_line.find(print_time_sec_placeholder, pos + strlen(buf));
}
// Replace used_filament_length
pos = gcode_line.find(used_filament_placeholder);
while (pos != std::string::npos) {
double total_filament_mm = 0.0;
for (const auto& mm : filament_mm) {
total_filament_mm += mm;
}
double used_filament_length = total_filament_mm / 1000.0; // Convert mm to m
char buf[64];
sprintf(buf, "%.2f", used_filament_length);
gcode_line.replace(pos, used_filament_placeholder.length(), buf);
processed = true;
pos = gcode_line.find(used_filament_placeholder, pos + strlen(buf));
}
replace_tag(ETags::Print_Time_Total_Sec_Placeholder, Slic3r::float_to_string_decimal_point(print_time_total_sec, 2));
replace_tag(ETags::Print_Time_Day_Placeholder, std::to_string(print_time_day));
replace_tag(ETags::Print_Time_Hour_Placeholder, std::to_string(print_time_hour));
replace_tag(ETags::Print_Time_Minute_Placeholder, std::to_string(print_time_minute));
replace_tag(ETags::Print_Time_Sec_Placeholder, std::to_string(print_time_sec));
replace_tag(ETags::Used_Filament_Length_Placeholder,
Slic3r::float_to_string_decimal_point(total_filament_mm / 1000.0, 2)); // Convert mm to m
// Same values as the print statistics that filename_format gets (PrintStatistics::config(), filled in by
// update_print_estimated_stats() in GCode.cpp), which runs only after this post-processing.
replace_tag(ETags::Normal_Print_Time_Placeholder, get_time_dhm(PrintEstimatedStatistics::ETimeMode::Normal));
replace_tag(ETags::Silent_Print_Time_Placeholder, is_stealth_time_estimator_enabled() ?
get_time_dhm(PrintEstimatedStatistics::ETimeMode::Stealth) :
short_time("N/A"));
const double total_cost = filament_total_cost + m_print->config().time_cost.value * print_time_total_sec / 3600.0;
replace_tag(ETags::Total_Weight_Placeholder, Slic3r::float_to_string_decimal_point(filament_total_g, 2));
replace_tag(ETags::Total_Cost_Placeholder, Slic3r::float_to_string_decimal_point(total_cost, 2));
replace_tag(ETags::Total_Wipe_Tower_Cost_Placeholder,
Slic3r::float_to_string_decimal_point(m_print->print_statistics().total_wipe_tower_cost, 2));
replace_tag(ETags::Total_Wipe_Tower_Filament_Placeholder,
Slic3r::float_to_string_decimal_point(m_print->print_statistics().total_wipe_tower_filament, 2));
return processed;
};