AuroraMiddleware/skia2
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Update help in SkFlags.

Browse Source 
Print the short name in addition to the standard name.

Allow an option for getting help for a specific command.

Review URL: https://codereview.chromium.org/12411007

git-svn-id: http://skia.googlecode.com/svn/trunk@8273 2bbb7eff-a529-9590-31e7-b0007b416f81
This commit is contained in:
scroggo@google.com 2013-03-20 19:50:41 +00:00
parent c78188896e
commit 8366df025a
2 changed files with 81 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

120
tools/SkFlags.cpp
View File

@ -17,6 +17,56 @@ void SkFlags::SetUsage(const char* usage) {
// Maximum line length for the help message.
#define LINE_LENGTH 80
static void print_help_for_flag(const SkFlagInfo* flag) {
SkDebugf("\t--%s", flag->name().c_str());
const SkString& shortName = flag->shortName();
if (shortName.size() > 0) {
SkDebugf(" or -%s", shortName.c_str());
}
SkDebugf(":\ttype: %s", flag->typeAsString().c_str());
if (flag->defaultValue().size() > 0) {
SkDebugf("\tdefault: %s", flag->defaultValue().c_str());
}
SkDebugf("\n");
const SkString& help = flag->help();
size_t length = help.size();
const char* currLine = help.c_str();
const char* stop = currLine + length;
while (currLine < stop) {
if (strlen(currLine) < LINE_LENGTH) {
// Only one line length's worth of text left.
SkDebugf("\t\t%s\n", currLine);
break;
}
int lineBreak = SkStrFind(currLine, "\n");
if (lineBreak < 0 || lineBreak > LINE_LENGTH) {
// No line break within line length. Will need to insert one.
// Find a space before the line break.
int spaceIndex = LINE_LENGTH - 1;
while (spaceIndex > 0 && currLine[spaceIndex] != ' ') {
spaceIndex--;
}
int gap;
if (0 == spaceIndex) {
// No spaces on the entire line. Go ahead and break mid word.
spaceIndex = LINE_LENGTH;
gap = 0;
} else {
// Skip the space on the next line
gap = 1;
}
SkDebugf("\t\t%.*s\n", spaceIndex, currLine);
currLine += spaceIndex + gap;
} else {
// the line break is within the limit. Break there.
lineBreak++;
SkDebugf("\t\t%.*s", lineBreak, currLine);
currLine += lineBreak;
}
}
SkDebugf("\n");
}
void SkFlags::ParseCommandLine(int argc, char** argv) {
// Only allow calling this function once.
static bool gOnce;
@ -34,55 +84,43 @@ void SkFlags::ParseCommandLine(int argc, char** argv) {
if (0 == strcmp("-h", argv[i]) || 0 == strcmp("--h", argv[i])
|| 0 == strcmp("-help", argv[i]) || 0 == strcmp("--help", argv[i])) {
// Print help message.
SkDebugf("%s\n%s\n", argv[0], gUsage.c_str());
SkTDArray<const char*> helpFlags;
for (int j = i + 1; j < argc; j++) {
if (SkStrStartsWith(argv[j], '-')) {
break;
}
helpFlags.append(1, &argv[j]);
}
if (0 == helpFlags.count()) {
// Only print general help message if help for specific flags is not requested.
SkDebugf("%s\n%s\n", argv[0], gUsage.c_str());
}
SkDebugf("Flags:\n");
SkFlagInfo* flag = SkFlags::gHead;
while (flag != NULL) {
SkDebugf("\t--%s:\ttype: %s", flag->name().c_str(),
flag->typeAsString().c_str());
if (flag->defaultValue().size() > 0) {
SkDebugf("\tdefault: %s", flag->defaultValue().c_str());
}
SkDebugf("\n");
const SkString& help = flag->help();
size_t length = help.size();
const char* currLine = help.c_str();
const char* stop = currLine + length;
while (currLine < stop) {
if (strlen(currLine) < LINE_LENGTH) {
// Only one line length's worth of text left.
SkDebugf("\t\t%s\n", currLine);
break;
}
int lineBreak = SkStrFind(currLine, "\n");
if (lineBreak < 0 || lineBreak > LINE_LENGTH) {
// No line break within line length. Will need to insert one.
// Find a space before the line break.
int spaceIndex = LINE_LENGTH - 1;
while (spaceIndex > 0 && currLine[spaceIndex] != ' ') {
spaceIndex--;
// If no flags followed --help, print them all
bool printFlag = 0 == helpFlags.count();
if (!printFlag) {
for (int k = 0; k < helpFlags.count(); k++) {
if (flag->name().equals(helpFlags[k]) ||
flag->shortName().equals(helpFlags[k])) {
printFlag = true;
helpFlags.remove(k);
break;
}
int gap;
if (0 == spaceIndex) {
// No spaces on the entire line. Go ahead and break mid word.
spaceIndex = LINE_LENGTH;
gap = 0;
} else {
// Skip the space on the next line
gap = 1;
}
SkDebugf("\t\t%.*s\n", spaceIndex, currLine);
currLine += spaceIndex + gap;
} else {
// the line break is within the limit. Break there.
lineBreak++;
SkDebugf("\t\t%.*s", lineBreak, currLine);
currLine += lineBreak;
}
}
SkDebugf("\n");
if (printFlag) {
print_help_for_flag(flag);
}
flag = flag->next();
}
if (helpFlags.count() > 0) {
SkDebugf("Requested help for unrecognized flags:\n");
for (int k = 0; k < helpFlags.count(); k++) {
SkDebugf("\t--%s\n", helpFlags[k]);
}
}
helpPrinted = true;
}
if (!helpPrinted) {

2
tools/SkFlags.h
View File

@ -298,6 +298,8 @@ public:
const SkString& name() const { return fName; }
const SkString& shortName() const { return fShortName; }
const SkString& help() const { return fHelpString; }
SkString defaultValue() const {