- Reading empty parameter values

- Parameter name as a single character
- Generating an exception when accessing a non-existent section

CHANGELOG.md

@@ -1,5 +1,16 @@
 # Changelog
 
+## [v0.4.0](https://git.zhirov.kz/dlang/readconf/compare/v0.3.1...v0.4.0) (2023.06.07)
+
+### New
+
+- Reading empty parameter values
+- Parameter name as a single character
+
+### Bug fixes
+
+- Generating an exception when accessing a non-existent section
+
 ## [v0.3.1](https://git.zhirov.kz/dlang/readconf/compare/v0.3.0...v0.3.1) (2023.04.30)
 
 - Windows OS support

README.md

@@ -34,15 +34,15 @@ void main()
 {
     rc.read("./tests/settings.conf");
 
-    foreach (key, param; rc.sn.keys())
+    foreach (key, param; rc.cf.sn.keys())
         writefln("%s => %s", key, param);
 
-    writeln(rc.sn.key("value1"));
+    writeln(rc.cf.sn.key("value1"));
 
-    foreach (key, param; rc.sn("part2").keys())
+    foreach (key, param; rc.cf.sn("part2").keys())
         writefln("%s => %s", key, param);
 
-    writeln(rc["part2"]["value1"]);
+    writeln(rc[]["part2"]["value1"]);
 }
 ```
 
@@ -54,6 +54,7 @@ value2 => Yes!
 value3 => value in apostrophes
 value4 => 1000
 value5 => 0.000
+value6 =>
 value7 => //path
 value8 => "Hey!"
 text without quotes
@@ -68,14 +69,14 @@ The unittests provide [examples](examples/) of configuration files and the `sett
 
 ```sh
 Running bin/readconf-test-unittest 
+ ✓ test __unittest_L111_C1
+ ✓ test __unittest_L26_C1
+ ✓ test __unittest_L52_C1
  ✓ test __unittest_L4_C1
- ✓ test __unittest_L106_C1
- ✓ test __unittest_L25_C1
- ✓ test __unittest_L51_C1
 
 Summary: 4 passed, 0 failed in 7 ms
 ```
 
 ## DUB
 
-Add a dependency on `"readconf": "~>0.3.1"`
+Add a dependency on `"readconf": "~>0.4.0"`

dub.json

@@ -17,22 +17,14 @@
             "name": "unittest",
             "targetPath": "bin",
             "dependencies": {
-                "silly": "~>1.1.1"
+                "silly": "~>1.2.0-dev.2"
             },
             "importPaths": ["source","tests"],
             "sourcePaths": ["tests"]
-        },
-        {
-            "name": "executable",
-            "targetType": "executable",
-            "targetPath": "bin",
-            "targetName": "app",
-            "importPaths": ["source","tests"],
-            "sourcePaths": ["tests"]
         }
     ],
     "targetName": "readconf",
     "dependencies": {
-        "singlog": "~>0.3.0"
+        "singlog": "~>0.4.0"
     }
 }

dub.selections.json

@@ -2,7 +2,7 @@
 	"fileVersion": 1,
 	"versions": {
 		"datefmt": "1.0.4",
-		"silly": "1.1.1",
-		"singlog": "0.3.0"
+		"silly": "1.2.0-dev.2",
+		"singlog": "0.4.0"
 	}
 }

examples/comments.conf

@@ -5,7 +5,8 @@ parameter3  => value3        // This will be a comment
 parameter4  => value4 /* This will be a comment
 parameter5  => value5;This will not be a comment
 parameter6  => value6// This will also be a whole value
-parameter7  => //value7      ;The value will not be read
+parameter7  => //value7      ;The value will be read as empty value
 parameter8  => "//value8"    # Now the value is correctly
 parameter9  => ';value9'     // The value is correctly too
 parameter10 => '"value10"'   // Quotes inside
+parameter11 => ; empty value

examples/simple.conf

@@ -14,3 +14,4 @@ parameter11 =    value11
 
 
 parameter12_ =>    value12
+parameter13 =

source/readconf.d

@@ -21,12 +21,12 @@ class Config
 private:
     enum {
         GROUP_PARAMETER           = 4,
-        GROUP_VALUE_1             = 11, // string
-        GROUP_VALUE_2             = 14, // "strin"
-        GROUP_VALUE_3             = 16, // 'string'
-        GROUP_SECTION_OTHER_OUTER = 17, // [string]
-        GROUP_SECTION_OTHER_INNER = 18, // string
-        GROUP_SECTION_MAIN        = 20, // []
+        GROUP_VALUE_1             = 12, // string
+        GROUP_VALUE_2             = 15, // "strin"
+        GROUP_VALUE_3             = 17, // 'string'
+        GROUP_SECTION_OTHER_OUTER = 19, // [string]
+        GROUP_SECTION_OTHER_INNER = 20, // string
+        GROUP_SECTION_MAIN        = 23, // []
     }
 
     static Config config;
@@ -34,9 +34,9 @@ private:
     bool readed = false;
     ConfigFile[string] configs;
 
-    const string pattern = "^( |\\t)*(((\\w(\\w|-)+)(( |\\t)*(=>|=){1}"
-        ~ "( |\\t)*)(?!\\/(\\/|\\*))(([^ >\"'=\\n\\t#;].*?)|(\"(.+)\")"
-        ~ "|('(.+)')){1})|(\\[(\\w(\\w|-)+)\\])|(\\[\\]))( |\\t)*"
+    const string pattern = "^( |\\t)*((((\\w(\\w|-)?)+)(( |\\t)*(=>|=){1}"
+        ~ "( |\\t)*)(?!\\/(\\/|\\*))(([^ >\"'=\\n\\t#;].*?)|(\"(.+)?\")"
+        ~ "|('(.+)?')|()){1})|(\\[((\\w(\\w|-)?)+)\\])|(\\[\\]))( |\\t)*"
         ~ "(( |\\t)(#|;|\\/\\/|\\/\\*).*)?$";
 
     /** 
@@ -84,10 +84,12 @@ private:
 
             int group = GROUP_VALUE_1;
 
-            if (match[group][0] == '\"')
-                group = GROUP_VALUE_2;
-            else if (match[group][0] == '\'')
-                group = GROUP_VALUE_3;
+            if (match[group].length) {
+                if (match[group][0] == '\"')
+                    group = GROUP_VALUE_2;
+                else if (match[group][0] == '\'')
+                    group = GROUP_VALUE_3;
+            }
 
             this.configs[configName].add(sectionName, ConfigParameter(match[GROUP_PARAMETER], match[group]));
         }
@@ -207,7 +209,10 @@ struct ConfigFile
             return sections[sections.byKey.front];
         if (section.length == 0)
             section = mainSection;
-        return section in sections ? sections[section] : ConfigSection(section);
+        if (section !in sections)
+            throw new Exception("The selected section does not exist");
+
+        return sections[section];
     }
 
      /** 
@@ -234,7 +239,10 @@ struct ConfigFile
             return sections[sections.byKey.front];
         if (section.length == 0)
             section = mainSection;
-        return section in sections ? sections[section] : ConfigSection(section);
+        if (section !in sections)
+            throw new Exception("The selected section does not exist");
+
+        return sections[section];
     }
 }
 

tests/settings.conf

@@ -5,8 +5,8 @@ value2=>"value in quotation marks"
 value3=>'value in apostrophes' ; and here is the first comment
 	 value4	 => 	 1000  		// free space in spaces and tabs
 	 value5	 => 	 0.000  	/* different form of commenting
-value6 =    // the string will not be read because the parameter value is missing
-value7 = '' ; limiting empty characters will also not be taken into account
+value6 =    // the string will be read as empty value
+value7 = '' ; limiting empty characters will also be taken into account
 [part2] 				; a new section!
 value1 = this value will be in the new section
 value 2 = 200 ; The parameter name is incorrect

tests/test.d

@@ -20,6 +20,7 @@ unittest
     assert(mainSection["parameter-10"] == "value10");
     assert(mainSection.key("parameter11") == "value11");
     assert(mainSection["parameter12_"] == "value12");
+    assert(mainSection["parameter13"].empty);
 }
 
 unittest
@@ -98,9 +99,13 @@ unittest
     assert(comConMaiSec["parameter4"] == "value4");
     assert(comConMaiSec["parameter5"] == "value5;This will not be a comment");
     assert(comConMaiSec["parameter6"] == "value6// This will also be a whole value");
+    assert(comConMaiSec["parameter7"] == "");
+    assert(comConMaiSec["parameter7"].empty);
     assert(comConMaiSec["parameter8"] == "//value8");
     assert(comConMaiSec["parameter9"] == ";value9");
     assert(comConMaiSec["parameter10"] == "\"value10\"");
+    assert(comConMaiSec["parameter11"] == "");
+    assert(comConMaiSec["parameter11"].empty);
 }
 
 unittest
@@ -112,6 +117,7 @@ unittest
     assert(rc.cf.sn.key("value3") == "value in apostrophes");
     assert(rc[][]["value4"] == "1000");
     assert(rc.cf.sn["value5"] == "0.000");
+    assert(rc.cf.sn["value6"].empty);
     assert(rc[][].key("value7") == "//path");
     assert(rc.cf.sn.key("value8") == "\"Hey!\"");
     assert(rc[]["part2"]["value1"] == "this value will be in the new section");