Adds support for multiple patterns

examples/takeovers.json

@@ -1,5 +1,39 @@
 {
     "flags": "-HnriE",
-    "pattern": "(There is no app configured at that hostname|NoSuchBucket|No Such Account|You're Almost There|a GitHub Pages site here|this shop is currently unavailable|There's nothing here|The request could not be satisfied|project not found|Your CNAME settings|InvalidBucketName|PermanentRedirect|The specified bucket does not exist|Repository not found|Bad Request: ERROR: The request could not be satisfied|Sorry, We Couldn't Find That Page|Fastly error: unknown domain:|The feed has not been found.|The thing you were looking for is no longer here, or never was|Please renew your subscription|There isn't a Github Pages site here.|We could not find what you're looking for.|No settings were found for this company:|No such app|is not a registered InCloud YouTrack|Unrecognized domain|Sorry, this shop is currently unavailable.|You are being redirected|project not found|The requested URL was not found on this server.|This UserVoice subdomain is currently available!|Do you want to register|Help Center Closed)"
+    "patterns": [
+        "There is no app configured at that hostname",
+        "NoSuchBucket",
+        "No Such Account",
+        "You're Almost There",
+        "a GitHub Pages site here",
+        "this shop is currently unavailable",
+        "There's nothing here",
+        "The request could not be satisfied",
+        "project not found",
+        "Your CNAME settings",
+        "InvalidBucketName",
+        "PermanentRedirect",
+        "The specified bucket does not exist",
+        "Repository not found",
+        "Bad Request: ERROR: The request could not be satisfied",
+        "Sorry, We Couldn't Find That Page",
+        "Fastly error: unknown domain:",
+        "The feed has not been found.",
+        "The thing you were looking for is no longer here, or never was",
+        "Please renew your subscription",
+        "There isn't a Github Pages site here.",
+        "We could not find what you're looking for.",
+        "No settings were found for this company:",
+        "No such app",
+        "is not a registered InCloud YouTrack",
+        "Unrecognized domain",
+        "Sorry, this shop is currently unavailable.",
+        "You are being redirected",
+        "project not found",
+        "The requested URL was not found on this server.",
+        "This UserVoice subdomain is currently available!",
+        "Do you want to register",
+        "Help Center Closed"
+    ]
 }
 

main.go

@@ -7,11 +7,13 @@ import (
 	"os"
 	"os/exec"
 	"os/user"
+	"strings"
 )
 
 type pattern struct {
-	Flags   string `json:"flags"`
-	Pattern string `json:"pattern"`
+	Flags    string   `json:"flags"`
+	Pattern  string   `json:"pattern"`
+	Patterns []string `json:"patterns"`
 }
 
 func main() {
@@ -47,8 +49,13 @@ func main() {
 	}
 
 	if pat.Pattern == "" {
-		fmt.Fprintf(os.Stderr, "pattern file '%s' contains no pattern\n", filename)
-		return
+		// check for multiple patterns
+		if len(pat.Patterns) == 0 {
+			fmt.Fprintf(os.Stderr, "pattern file '%s' contains no pattern(s)\n", filename)
+			return
+		}
+
+		pat.Pattern = "(" + strings.Join(pat.Patterns, "|") + ")"
 	}
 
 	cmd := exec.Command("grep", "--color", pat.Flags, pat.Pattern, files)