commit a0b746402156fb637269ebe32ec9d2a64ac56df5
Author: Jonathan Bernard <jonathan@jdbernard.com>
Date:   Sun Feb 16 00:50:07 2020 -0600

    Initial commit.

diff --git a/update_nim_package_version.nim b/update_nim_package_version.nim
new file mode 100644
index 0000000..663b569
--- /dev/null
+++ b/update_nim_package_version.nim
@@ -0,0 +1,67 @@
+import os, strutils, unicode
+import nre except toSeq
+
+type VersionInfo = tuple[curVersion, nextVersion, assignment: string]
+
+proc getCurVersion(versionFilename: string): VersionInfo =
+
+  let verPat = re(r"(.*=\s*)""([\d.]+)""")
+
+  for line in versionFilename.lines:
+    let m = line.match(verPat)
+    if m.isSome:
+      return (
+        curVersion: m.get.captures[1],
+        nextVersion: m.get.captures[1],
+        assignment: m.get.captures[0])
+
+  raise newException(Exception, "Could not find the current version in " & versionFilename)
+
+proc updateVersionFile(versionFilename: string, versionInfo: VersionInfo): void =
+  versionFilename.writeFile(versionInfo.assignment & "\"" & versionInfo.nextVersion & "\"")
+
+proc updateNimbleFile(projectName: string, versionInfo: VersionInfo): void =
+  var newLines: seq[string] = @[]
+  let verPat = re"(\s*version\s*=\s*).*"
+  let nimbleFilename = projectName & ".nimble"
+
+  for line in nimbleFilename.lines:
+    let m = line.match(verPat)
+    if m.isSome:
+      newLines.add(m.get.captures[0] & '"' & versionInfo.nextVersion & '"')
+    else: newLines.add(line)
+
+  nimbleFilename.writeFile(newLines.join("\n"))
+
+when isMainModule:
+  if paramCount() < 2:
+    echo """Usage:
+  update_nim_package_version <pkgName> <pathToVersionDefFile>
+"""
+    quit(QuitFailure)
+
+  let projectName = paramStr(1)
+  let versionFilepath = paramStr(2)
+  var versionInfo = getCurVersion(versionFilepath)
+
+  try:
+    var acceptNewVersion = false
+    while not acceptNewVersion:
+      stdout.writeLine "Current version is " & versionInfo.curVersion & "."
+      stdout.write "New version? "
+      versionInfo.nextVersion = stdin.readLine
+
+      stdout.write "New version will be set to " & versionInfo.nextVersion & ". Is this correct (yes/no)? "
+      let isCorrect = stdin.readLine
+      acceptNewVersion = "yes".startsWith(isCorrect.toLower)
+
+    echo "Updating version definition in " & versionFilepath
+    updateVersionFile(versionFilepath, versionInfo)
+
+    echo "Updating version definition in " & projectName & ".nimble"
+    updateNimbleFile(projectName, versionInfo)
+
+  except EOFError:
+    echo "Aborted"
+    quit()
+
diff --git a/update_nim_package_version.nimble b/update_nim_package_version.nimble
new file mode 100644
index 0000000..8ee02f0
--- /dev/null
+++ b/update_nim_package_version.nimble
@@ -0,0 +1,13 @@
+# Package
+
+version       = "0.1.0"
+author        = "Jonathan Bernard"
+description   = "Small util to update version consistently for nim packages I write."
+license       = "MIT"
+bin           = @["update_nim_package_version"]
+
+
+
+# Dependencies
+
+requires "nim >= 1.0.4"