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Better error checking for property file reading.

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This commit is contained in:
UnknownShadow200 2016-09-12 10:38:33 +10:00
parent 8939de0698
commit b63a8d8294
1 changed files with 40 additions and 16 deletions
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56
Config/PropertiesFile.cs
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@ -20,44 +20,68 @@ using System.IO;
namespace MCGalaxy {
public delegate void LineProcessor<T>(string key, string value, ref T state);
/// <summary> Handles text files that have multiple key-value lines in the format 'key=value'.
public delegate void LineProcessor<T>(string key, string value, ref T state);
/// <summary> Handles text files that have multiple key-value lines in the format 'key=value'.
/// Also supports # for commented lines. </summary>
public static class PropertiesFile {
public static bool Read(string path, Action<string, string> processor, char separator = '=') {
public static bool Read(string path, Action<string, string> processor,
char separator = '=', bool trimValue = true) {
if (!File.Exists(path)) return false;
using (CP437Reader reader = new CP437Reader(path)) {
string line;
while ((line = reader.ReadLine()) != null) {
if (line == "" || line[0] == '#') continue;
int index = line.IndexOf(separator);
int index = ParseLine(line, path, separator);
if (index == -1) continue;
string key = index < 0 ? line : line.Substring(0, index);
string value = index < 0 ? "" : line.Substring(index + 1);
processor(key.Trim(), value.Trim());
string key = line.Substring(0, index), value = line.Substring(index + 1);
if (trimValue) value = value.Trim();
try {
processor(key.Trim(), value);
} catch (Exception ex) {
Server.ErrorLog(ex);
Server.s.Log("Line \"" + line + "\" in " + path + " caused an error");
}
}
}
return true;
}
public static bool Read<T>(string path, ref T state, LineProcessor<T> processor, char separator = '=') {
public static bool Read<T>(string path, ref T state, LineProcessor<T> processor,
char separator = '=', bool trimValue = true) {
if (!File.Exists(path)) return false;
using (CP437Reader reader = new CP437Reader(path)) {
string line;
while ((line = reader.ReadLine()) != null) {
if (line == "" || line[0] == '#') continue;
int index = line.IndexOf(separator);
int index = ParseLine(line, path, separator);
if (index == -1) continue;
string key = index < 0 ? line : line.Substring(0, index);
string value = index < 0 ? "" : line.Substring(index + 1);
processor(key.Trim(), value.Trim(), ref state);
string key = line.Substring(0, index), value = line.Substring(index + 1);
if (trimValue) value = value.Trim();
try {
processor(key.Trim(), value, ref state);
} catch (Exception ex) {
Server.ErrorLog(ex);
Server.s.Log("Line \"" + line + "\" in " + path + " caused an error");
}
}
}
return true;
}
static int ParseLine(string line, string path, char separator) {
if (line == "" || line[0] == '#') return -1;
int index = line.IndexOf(separator);
if (index == -1) {
Server.s.Log("Line \"" + line + "\" in " + path + " is missing a value");
return -1;
}
return index;
}
}
}