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callback.cpp
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138 lines (121 loc) · 3.19 KB
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#include <map>
#include <util.h>
#include <vector>
#include <stdio.h>
#include <string.h>
#include <common.h>
#include <errlog.h>
#include <algorithm>
#include <callback.h>
static std::vector<Callback*> *callbacks;
typedef std::map<uintptr_t, Callback*> CBMap;
Callback::Callback()
{
if(0==callbacks) callbacks = new std::vector<Callback*>;
callbacks->push_back(this);
}
Callback *Callback::find(
const char *name,
bool printList
)
{
CBMap found;
size_t sz = strlen(name);
auto e = callbacks->end();
auto i = callbacks->begin();
while(i!=e) {
Callback *c = *(i++);
std::vector<const char*> names;
names.push_back(c->name());
c->aliases(names);
auto e = names.end();
auto i = names.begin();
while(i!=e) {
const char *nm = *(i++);
size_t x = std::min(sz, strlen(nm));
if(0==strncasecmp(nm, name, x)) found[(uintptr_t)c] = c;
}
}
if(1==found.size() && !printList) {
return found.begin()->second;
} else if(0==found.size()) {
printf("\n");
warning("\"%s\": unknown command name\n", name);
} else {
printf("\n");
if(!printList) {
warning("\"%s\": ambiguous command name, could be any of:\n", name);
}
int count = 0;
auto e = found.end();
auto i = found.begin();
while(i!=e) {
std::vector<const char*> names;
Callback *c = (i++)->second;
c->aliases(names);
printf(
" %3d. %s%s",
++count,
c->name(),
0<names.size() ? " (aliases: " : ""
);
bool first = true;
auto e = names.end();
auto i = names.begin();
while(i!=e) {
const char *nm = *(i++);
printf(
"%s%s",
first ? "" : ", ",
nm
);
first = false;
}
printf(
"%s\n",
0<names.size() ? ")" : ""
);
}
printf("\n");
}
if(printList || 0==strcmp(name, "help")) return 0;
printf("use:\n");
printf(" \"parser man\" for complete documentation of all commands.\n");
printf(" \"parser help\" for a short summary of available commands.\n\n");
exit(-1);
}
struct Cmp
{
bool operator()(
const Callback *a,
const Callback *b
)
{
const char *an = a->name();
const char *bn = b->name();
int n = strcmp(an, bn);
return n<0;
}
};
void Callback::showAllHelps(
bool longHelp
)
{
auto e = callbacks->end();
auto i = callbacks->begin();
std::sort(i, e, Cmp());
while(i!=e) {
Callback *c = *(i++);
printf(" USAGE: parser %s ", c->name());
const optparse::OptionParser *parser = c->optionParser();
if(parser) {
printf(
"%s\n",
longHelp ?
parser->get_usage().c_str() :
parser->format_help().c_str()
);
}
}
printf("\n");
}