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htop
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Introduce versioned config files and config_reader_min_version

This commit is contained in:
Daniel Lange 2021-07-16 17:04:23 +02:00 committed by Benny Baumann
parent dd91e9a9da
commit 4b59a2e6b7
2 changed files with 14 additions and 1 deletions
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12
Settings.c
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@ -166,7 +166,15 @@ static bool Settings_read(Settings* this, const char* fileName, unsigned int ini
String_freeArray(option);
continue;
}
if (String_eq(option[0], "fields")) {
if (String_eq(option[0], "config_reader_min_version")) {
this->config_version = atoi(option[1]);
if (this->config_version > CONFIG_READER_MIN_VERSION) {
// the version of the config file on disk is newer than what we can read
fprintf(stderr, "WARNING: The config file %s requires support for a newer format (v%d) than what this version of htop can read (v%d).\n", fileName, this->config_version, CONFIG_READER_MIN_VERSION);
fprintf(stderr, " It will be overwritten when this version of htop exits.\n");
return false;
}
} else if (String_eq(option[0], "fields")) {
Settings_readFields(this, option[1]);
didReadFields = true;
} else if (String_eq(option[0], "sort_key")) {
@ -326,6 +334,8 @@ int Settings_write(const Settings* this, bool onCrash) {
fprintf(fd, "# Beware! This file is rewritten by htop when settings are changed in the interface.\n");
fprintf(fd, "# The parser is also very primitive, and not human-friendly.\n");
}
fprintf(fd, "htop_version=%s\n", VERSION);
fprintf(fd, "config_reader_min_version=%d\n", CONFIG_READER_MIN_VERSION);
writeFields(fd, this->fields, this->dynamicColumns, "fields");
// This "-1" is for compatibility with the older enum format.
fprintf(fd, "sort_key=%d\n", (int) this->sortKey - 1);

3
Settings.h
View File

@ -18,6 +18,8 @@ in the source distribution for its full text.
#define DEFAULT_DELAY 15
#define CONFIG_READER_MIN_VERSION 2
typedef struct {
int len;
char** names;
@ -26,6 +28,7 @@ typedef struct {
typedef struct Settings_ {
char* filename;
int config_version;
MeterColumnSettings columns[2];
Hashtable* dynamicColumns;