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authorDarren McCleary <darren.rmc@gmail.com>2017-08-30 13:26:28 -0400
committerDarren McCleary <darren.rmc@gmail.com>2017-08-30 13:26:28 -0400
commit7c53431dc36059d8b42cf5a946b1f88ab54a28a4 (patch)
tree1cfd77c877dcf5af7a468249907ebd6db6fa1626
parent41ab61b9c9cea6554839b654462e207b251bfa40 (diff)
Added flag to print PDF byte diffs
-rw-r--r--compare.go16
1 files changed, 8 insertions, 8 deletions
diff --git a/compare.go b/compare.go
index 416e545..f0c286e 100644
--- a/compare.go
+++ b/compare.go
@@ -75,9 +75,9 @@ func writeBytes(leadStr string, startPos int, sl []byte) {
fmt.Printf("|\n")
}
-func checkBytes(pos int, sl1, sl2 []byte) (eq bool) {
+func checkBytes(pos int, sl1, sl2 []byte, printDiff bool) (eq bool) {
eq = bytes.Equal(sl1, sl2)
- if !eq {
+ if !eq && printDiff {
writeBytes("<", pos, sl1)
writeBytes(">", pos, sl2)
}
@@ -86,7 +86,7 @@ func checkBytes(pos int, sl1, sl2 []byte) (eq bool) {
// CompareBytes compares the bytes referred to by sl1 with those referred to by
// sl2. Nil is returned if the buffers are equal, otherwise an error.
-func CompareBytes(sl1, sl2 []byte) (err error) {
+func CompareBytes(sl1, sl2 []byte, printDiff bool) (err error) {
var posStart, posEnd, len1, len2, length int
var diffs bool
@@ -101,7 +101,7 @@ func CompareBytes(sl1, sl2 []byte) (err error) {
if posEnd > length {
posEnd = length
}
- if !checkBytes(posStart, sl1[posStart:posEnd], sl2[posStart:posEnd]) {
+ if !checkBytes(posStart, sl1[posStart:posEnd], sl2[posStart:posEnd], printDiff) {
diffs = true
}
posStart = posEnd
@@ -115,13 +115,13 @@ func CompareBytes(sl1, sl2 []byte) (err error) {
// ComparePDFs reads and compares the full contents of the two specified
// readers byte-for-byte. Nil is returned if the buffers are equal, otherwise
// an error.
-func ComparePDFs(rdr1, rdr2 io.Reader) (err error) {
+func ComparePDFs(rdr1, rdr2 io.Reader, printDiff bool) (err error) {
var b1, b2 *bytes.Buffer
_, err = b1.ReadFrom(rdr1)
if err == nil {
_, err = b2.ReadFrom(rdr2)
if err == nil {
- err = CompareBytes(b1.Bytes(), b2.Bytes())
+ err = CompareBytes(b1.Bytes(), b2.Bytes(), printDiff)
}
}
return
@@ -130,13 +130,13 @@ func ComparePDFs(rdr1, rdr2 io.Reader) (err error) {
// ComparePDFFiles reads and compares the full contents of the two specified
// files byte-for-byte. Nil is returned if the file contents are equal, or if
// the second file is missing, otherwise an error.
-func ComparePDFFiles(file1Str, file2Str string) (err error) {
+func ComparePDFFiles(file1Str, file2Str string, printDiff bool) (err error) {
var sl1, sl2 []byte
sl1, err = ioutil.ReadFile(file1Str)
if err == nil {
sl2, err = ioutil.ReadFile(file2Str)
if err == nil {
- err = CompareBytes(sl1, sl2)
+ err = CompareBytes(sl1, sl2, printDiff)
} else {
// Second file is missing; treat this as success
err = nil