File - Size Check Operations

Powerful extensions for dart:io.File to simplify size formatting, path manipulation, and type checking for local files.

1. Formatting

   fileFormattedSize() · String

   Show Parameters

   fullySizedName · bool · default: "false"

   If true, uses the full unit names (e.g., ‘Kilobytes’); otherwise, uses abbreviations (e.g., ‘KB’).

   Retrieves the file size and formats it into human-readable units (B, KB, MB, GB).

   final size = file.fileFormattedSize(fullySizedName: true);
   print(size); // 5.32 Megabytes
   

2. Getters

   sizeInBytes · double

   Returns the file size in raw Bytes as a double.

   final size = file.sizeInBytes; // 1048576.0 for a 1MB file
   

   sizeInKB · double

   Returns the file size in Kilobytes (KB) as a [double].

   print(file.sizeInKB); // 1024.0 for a 1MB file
   

   sizeInMB · double

   Returns the file size in Megabytes (MB) as a [double].

   print(file.sizeInMB); // 1.0 for a 1MB file
   

   sizeInGB · double

   Returns the file size in Gigabytes (GB) as a [double].

   print(file.sizeInGB); // 0.0009765625 for a 1MB file
   

3. Comparators

   isLargerThanMb() · bool

   Show Parameters

   mb · double · required

   The size limit in megabytes.

   Checks if the file size is strictly greater than the specified size in Megabytes (MB).

   print(file.isLargerThanMb(50)); // true if file is 50.01MB
   

   isSmallerThanMb() · bool

   Show Parameters

   mb · double · required

   The size limit in megabytes.

   Checks if the file size is strictly less than the specified size in Megabytes (MB).

   print(file.isSmallerThanMb(0.5)); // true if file is 400KB
   

   isLargerThanFile() · bool

   Show Parameters

   other · File · required

   The other File object to compare size against.

   Checks if this file is larger than another File object by comparing raw byte counts.

   print(fileA.isLargerThanFile(fileB));
   

   isSmallerThanFile() · bool

   Show Parameters

   other · File · required

   The other File object to compare size against.

   Checks if this file is smaller than another File object by comparing raw byte counts.

   print(fileA.isSmallerThanFile(fileB));
   

   isSameSizeAsFile() · bool

   Show Parameters

   other · File · required

   The other File object to compare size against.

   Checks if this file has the exact same size (byte count) as another [File] object.

   print(fileA.isSameSizeAsFile(fileB));
   

   isSizeBetween() · bool

   Show Parameters

   minMB · double · required

   The minimum size limit (inclusive) in megabytes.

   maxMB · double · required

   The maximum size limit (inclusive) in megabytes.

   Checks if the file size falls inclusively between the specified minimum and maximum sizes in Megabytes (MB).

   // Check if file is between 500 KB (0.5 MB) and 10 MB
   print(file.isSizeBetween(minMB: 0.5, maxMB: 10));
   

4. Manipulators

   percentageOfLimitMb() · double

   Show Parameters

   totalLimitMB · double · required

   The total limit in Megabytes (MB).

   Calculates the file’s size as a percentage of a given total size limit.

   // If file is 5MB and limit is 100MB, returns 5.0
   print(file.percentageOfLimitMb(100));