add golang program to summarize msvc warnings/errors from appveyor

mpictor · mpictor · commit 618deae50e97 · 2015-06-08T22:40:38.000-04:00
diff --git a/misc/summarize-appveyor-log.go b/misc/summarize-appveyor-log.go
@@ -0,0 +1,118 @@
+//summarize MSVC errors from an appveyor log
+// compile with 'go build summarize-appveyor-log.go'
+package main
+
+import (
+	"fmt"
+	"bufio"
+	"os"
+	"regexp"
+	"strings"
+)
+
+//uses stdin and stdout
+func main() {
+	log := unwrap()
+    warns,errs := countMessages(log)
+    printMessages("warning",warns)
+    printMessages("error",errs)
+}
+
+/* the regex will match lines like
+ [ 00:03:42] c:\projects\stepcode\src\base\sc_benchmark.h(45): war*ning C4251: 'benchmark::descr' : class 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>' needs to have dll-interface to be used by clients of class 'benchmark' [C:\projects\STEPcode\build\src\base\base.vcxproj]
+ [00:03:48] C:\projects\STEPcode\src\base\sc_benchmark.cc(61): warning C4244: '=' : conversion from 'SIZE_T' to 'long', possible loss of data [C:\projects\STEPcode\build\src\base\base.vcxproj]*
+*/
+func countMessages(log string) (warns, errs map[string][]string) {
+    warns = make (map[string][]string)
+    errs = make (map[string][]string)
+    tstamp := `\[\d\d:\d\d:\d\d\] `
+    fname := " *(.*)"
+    fline := `\((\d+)\): `
+    msgNr := `([A-Z]\d+): `
+    msgTxt := `([^\[]*) `
+    tail := `\[[^\[\]]*\]`
+	warnRe := regexp.MustCompile(tstamp + fname + fline + `warning ` + msgNr + msgTxt + tail)
+    errRe := regexp.MustCompile(tstamp + fname + fline + `error ` + msgNr + msgTxt + tail)
+	reScanner := bufio.NewScanner(strings.NewReader(log))
+	for reScanner.Scan() {
+		line := reScanner.Text()
+		if warnRe.MatchString(line) {
+			key := warnRe.ReplaceAllString(line, "$3")
+			path := strings.ToLower(warnRe.ReplaceAllString(line, "$1:$2"))
+			arr := warns[key]
+			if arr == nil {
+                arr = make([]string,5)
+				//detailed text as first string in array
+				text := warnRe.ReplaceAllString(line, "$4")
+				arr[0] = fmt.Sprintf("%s", text)
+			}
+			//eliminate duplicates
+			match := false
+			for _, l := range arr {
+                if l == path {
+                    match = true
+                }
+            }
+            if !match {
+                warns[key] = append(arr, path)
+            }
+		} else if errRe.MatchString(line) {
+			key := errRe.ReplaceAllString(line, "$3")
+            path := strings.ToLower(errRe.ReplaceAllString(line, "$1:$2"))
+			arr := errs[key]
+			if arr == nil {
+                arr = make([]string,5)
+                //detailed text as first string in array
+				text := errRe.ReplaceAllString(line, "$4")
+				arr[0] = fmt.Sprintf("%s", text)
+			}
+			//eliminate duplicates
+			match := false
+			for _, l := range arr {
+                if l == path {
+                    match = true
+                }
+            }
+            if !match {
+                errs[key] = append(arr, path)
+            }
+		}
+	}
+	return
+}
+
+func printMessages( typ string, m map[string][]string) {
+    for k,v := range m {
+        for i,l := range v {
+            //first string is an example,  not a location
+            if i == 0 {
+                fmt.Printf("%s %s (i.e. \"%s\")\n", typ, k, l)
+            } else if len(l) > 1 { //not sure where blank lines are coming from...
+                fmt.Printf("  >> %s\n",l)
+            }
+        }
+    }
+}
+
+func unwrap() (log string) {
+	//read stdin, write stdout
+	newline := true
+	unwrapScanner := bufio.NewScanner(os.Stdin)
+	for unwrapScanner.Scan() {
+		lastNewline := newline
+		line := unwrapScanner.Text()
+		newline = (len(line) < 240)
+		if !lastNewline {
+			log += fmt.Sprintf("%s", line[11:])
+		} else {
+			log += fmt.Sprintf("%s", line)
+		}
+		if newline {
+			log += fmt.Sprintf("\n")
+		}
+	}
+	if err := unwrapScanner.Err(); err != nil {
+		fmt.Fprintln(os.Stderr, "Error reading appveyor log:", err)
+	}
+	return
+}
