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atomic save

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This commit is contained in:
KubaPro010
2025-12-24 12:08:02 +01:00
parent 8bc35536c5
commit 73beb35913
2 changed files with 9 additions and 8 deletions
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2
plugin.lua
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@@ -14,7 +14,7 @@ data = "" -- Set during run_lua calls
---@return nil
function set_rds_program_defaults() end
---Saves, loads and resets the state of the data
---Saves, loads and resets the state of the data, you might as well restart the whole program
---@return nil
function reset_rds() end

15
src/fs.c
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@@ -2,7 +2,9 @@
void encoder_saveToFile(RDSEncoder *enc) {
char encoderPath[128];
char encoderPath_tmp[128];
snprintf(encoderPath, sizeof(encoderPath), "%s/.rdsEncoder", getenv("HOME"));
snprintf(encoderPath_tmp, sizeof(encoderPath_tmp), "%s/.rdsEncoder.tmp", getenv("HOME"));
RDSEncoder tempEncoder;
FILE *file = fopen(encoderPath, "rb");
@@ -17,19 +19,20 @@ void encoder_saveToFile(RDSEncoder *enc) {
tempEncoder.program = enc->program;
RDSEncoderFile rdsEncoderfile = {.file_starter = 225, .file_middle = 160, .file_ender = 95, .program = tempEncoder.program};
memcpy(&rdsEncoderfile.data[enc->program], &tempEncoder.data[enc->program], sizeof(RDSData));
memcpy(&rdsEncoderfile.rtpData[enc->program], &tempEncoder.rtpData[enc->program], sizeof(RDSRTPlusData) * 2);
memcpy(&rdsEncoderfile.data, &tempEncoder.data, sizeof(RDSData)*PROGRAMS);
memcpy(&rdsEncoderfile.rtpData, &tempEncoder.rtpData, sizeof(RDSRTPlusData) * 2 * PROGRAMS);
memcpy(&rdsEncoderfile.encoder_data, &tempEncoder.encoder_data, sizeof(RDSEncoderData));
rdsEncoderfile.crc = crc16_ccitt((char *)&rdsEncoderfile, offsetof(RDSEncoderFile, crc));
file = fopen(encoderPath, "wb");
file = fopen(encoderPath_tmp, "wb");
if (!file) {
perror("Error opening file");
return;
}
fwrite(&rdsEncoderfile, sizeof(RDSEncoderFile), 1, file);
fclose(file);
rename(encoderPath_tmp, encoderPath);
}
int encoder_loadFromFile(RDSEncoder *enc) {
@@ -55,10 +58,8 @@ int encoder_loadFromFile(RDSEncoder *enc) {
return 1;
}
for (int i = 0; i < PROGRAMS; i++) {
memcpy(&(enc->data[i]), &(rdsEncoderfile.data[i]), sizeof(RDSData));
memcpy(&(enc->rtpData[i]), &(rdsEncoderfile.rtpData[i]), sizeof(RDSRTPlusData)*2);
}
memcpy(&(enc->data), &(rdsEncoderfile.data), sizeof(RDSData)*PROGRAMS);
memcpy(&(enc->rtpData), &(rdsEncoderfile.rtpData), sizeof(RDSRTPlusData)*2*PROGRAMS);
memcpy(&(enc->encoder_data), &(rdsEncoderfile.encoder_data), sizeof(RDSEncoderData));
enc->program = rdsEncoderfile.program;
return 0;