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//usr/bin/env go run "$0" "$@"; exit $?
// Command gocovcat combines multiple go cover runs, and prints the
// result on stdout.
package main
import (
"bufio"
"fmt"
"os"
"sort"
"strconv"
"strings"
)
func handleErr(err error) {
if err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
}
func main() {
modeBool := false
blocks := map[string]int{}
for _, filename := range os.Args[1:] {
file, err := os.Open(filename)
handleErr(err)
buf := bufio.NewScanner(file)
for buf.Scan() {
line := buf.Text()
if strings.HasPrefix(line, "mode: ") {
m := strings.TrimPrefix(line, "mode: ")
switch m {
case "set":
modeBool = true
case "count", "atomic":
// do nothing
default:
fmt.Fprintf(os.Stderr, "Unrecognized mode: %s\n", m)
os.Exit(1)
}
} else {
sp := strings.LastIndexByte(line, ' ')
block := line[:sp]
cntStr := line[sp+1:]
cnt, err := strconv.Atoi(cntStr)
handleErr(err)
blocks[block] += cnt
}
}
handleErr(buf.Err())
}
keys := make([]string, 0, len(blocks))
for key := range blocks {
keys = append(keys, key)
}
sort.Strings(keys)
modeStr := "count"
if modeBool {
modeStr = "set"
}
fmt.Printf("mode: %s\n", modeStr)
for _, block := range keys {
cnt := blocks[block]
if modeBool && cnt > 1 {
cnt = 1
}
fmt.Printf("%s %d\n", block, cnt)
}
}
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