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author | Wladimir J. van der Laan <laanwj@gmail.com> | 2015-10-01 16:23:59 +0200 |
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committer | Wladimir J. van der Laan <laanwj@gmail.com> | 2015-10-01 16:36:15 +0200 |
commit | f297042cae572753e6c25d25caf92091e88b76df (patch) | |
tree | 59a0827f7d3500f1b145e4f5653f1f8b94c1e037 /src/univalue/lib/univalue.cpp | |
parent | 17d0e638b66b9dd51370335c9b0a7039de3f81fa (diff) | |
parent | 95acf3cc6d90d9406030ce897efdee8be0550a53 (diff) | |
download | bitcoin-f297042cae572753e6c25d25caf92091e88b76df.tar.xz |
Merge pull request #6637
95acf3c remove $(@F) and subdirs from univalue make (Jonas Schnelli)
9623e93 [Univalue] add univalue over subtree (Jonas Schnelli)
2f9f082 Squashed 'src/univalue/' content from commit 87d9045 (Jonas Schnelli)
0917306 remove univalue, prepare for subtree (Jonas Schnelli)
Diffstat (limited to 'src/univalue/lib/univalue.cpp')
-rw-r--r-- | src/univalue/lib/univalue.cpp | 365 |
1 files changed, 365 insertions, 0 deletions
diff --git a/src/univalue/lib/univalue.cpp b/src/univalue/lib/univalue.cpp new file mode 100644 index 0000000000..883e8651fe --- /dev/null +++ b/src/univalue/lib/univalue.cpp @@ -0,0 +1,365 @@ +// Copyright 2014 BitPay Inc. +// Copyright 2015 Bitcoin Core Developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include <stdint.h> +#include <ctype.h> +#include <errno.h> +#include <iomanip> +#include <limits> +#include <sstream> +#include <stdexcept> +#include <stdlib.h> +#include <string.h> + +#include "univalue.h" + +namespace +{ +static bool ParsePrechecks(const std::string& str) +{ + if (str.empty()) // No empty string allowed + return false; + if (str.size() >= 1 && (isspace(str[0]) || isspace(str[str.size()-1]))) // No padding allowed + return false; + if (str.size() != strlen(str.c_str())) // No embedded NUL characters allowed + return false; + return true; +} + +bool ParseInt32(const std::string& str, int32_t *out) +{ + if (!ParsePrechecks(str)) + return false; + char *endp = NULL; + errno = 0; // strtol will not set errno if valid + long int n = strtol(str.c_str(), &endp, 10); + if(out) *out = (int32_t)n; + // Note that strtol returns a *long int*, so even if strtol doesn't report a over/underflow + // we still have to check that the returned value is within the range of an *int32_t*. On 64-bit + // platforms the size of these types may be different. + return endp && *endp == 0 && !errno && + n >= std::numeric_limits<int32_t>::min() && + n <= std::numeric_limits<int32_t>::max(); +} + +bool ParseInt64(const std::string& str, int64_t *out) +{ + if (!ParsePrechecks(str)) + return false; + char *endp = NULL; + errno = 0; // strtoll will not set errno if valid + long long int n = strtoll(str.c_str(), &endp, 10); + if(out) *out = (int64_t)n; + // Note that strtoll returns a *long long int*, so even if strtol doesn't report a over/underflow + // we still have to check that the returned value is within the range of an *int64_t*. + return endp && *endp == 0 && !errno && + n >= std::numeric_limits<int64_t>::min() && + n <= std::numeric_limits<int64_t>::max(); +} + +bool ParseDouble(const std::string& str, double *out) +{ + if (!ParsePrechecks(str)) + return false; + if (str.size() >= 2 && str[0] == '0' && str[1] == 'x') // No hexadecimal floats allowed + return false; + std::istringstream text(str); + text.imbue(std::locale::classic()); + double result; + text >> result; + if(out) *out = result; + return text.eof() && !text.fail(); +} +} + +using namespace std; + +const UniValue NullUniValue; + +void UniValue::clear() +{ + typ = VNULL; + val.clear(); + keys.clear(); + values.clear(); +} + +bool UniValue::setNull() +{ + clear(); + return true; +} + +bool UniValue::setBool(bool val_) +{ + clear(); + typ = VBOOL; + if (val_) + val = "1"; + return true; +} + +static bool validNumStr(const string& s) +{ + string tokenVal; + unsigned int consumed; + enum jtokentype tt = getJsonToken(tokenVal, consumed, s.c_str()); + return (tt == JTOK_NUMBER); +} + +bool UniValue::setNumStr(const string& val_) +{ + if (!validNumStr(val_)) + return false; + + clear(); + typ = VNUM; + val = val_; + return true; +} + +bool UniValue::setInt(uint64_t val) +{ + string s; + ostringstream oss; + + oss << val; + + return setNumStr(oss.str()); +} + +bool UniValue::setInt(int64_t val) +{ + string s; + ostringstream oss; + + oss << val; + + return setNumStr(oss.str()); +} + +bool UniValue::setFloat(double val) +{ + string s; + ostringstream oss; + + oss << std::setprecision(16) << val; + + bool ret = setNumStr(oss.str()); + typ = VNUM; + return ret; +} + +bool UniValue::setStr(const string& val_) +{ + clear(); + typ = VSTR; + val = val_; + return true; +} + +bool UniValue::setArray() +{ + clear(); + typ = VARR; + return true; +} + +bool UniValue::setObject() +{ + clear(); + typ = VOBJ; + return true; +} + +bool UniValue::push_back(const UniValue& val) +{ + if (typ != VARR) + return false; + + values.push_back(val); + return true; +} + +bool UniValue::push_backV(const std::vector<UniValue>& vec) +{ + if (typ != VARR) + return false; + + values.insert(values.end(), vec.begin(), vec.end()); + + return true; +} + +bool UniValue::pushKV(const std::string& key, const UniValue& val) +{ + if (typ != VOBJ) + return false; + + keys.push_back(key); + values.push_back(val); + return true; +} + +bool UniValue::pushKVs(const UniValue& obj) +{ + if (typ != VOBJ || obj.typ != VOBJ) + return false; + + for (unsigned int i = 0; i < obj.keys.size(); i++) { + keys.push_back(obj.keys[i]); + values.push_back(obj.values[i]); + } + + return true; +} + +int UniValue::findKey(const std::string& key) const +{ + for (unsigned int i = 0; i < keys.size(); i++) { + if (keys[i] == key) + return (int) i; + } + + return -1; +} + +bool UniValue::checkObject(const std::map<std::string,UniValue::VType>& t) +{ + for (std::map<std::string,UniValue::VType>::const_iterator it = t.begin(); + it != t.end(); it++) { + int idx = findKey(it->first); + if (idx < 0) + return false; + + if (values[idx].getType() != it->second) + return false; + } + + return true; +} + +const UniValue& UniValue::operator[](const std::string& key) const +{ + if (typ != VOBJ) + return NullUniValue; + + int index = findKey(key); + if (index < 0) + return NullUniValue; + + return values[index]; +} + +const UniValue& UniValue::operator[](unsigned int index) const +{ + if (typ != VOBJ && typ != VARR) + return NullUniValue; + if (index >= values.size()) + return NullUniValue; + + return values[index]; +} + +const char *uvTypeName(UniValue::VType t) +{ + switch (t) { + case UniValue::VNULL: return "null"; + case UniValue::VBOOL: return "bool"; + case UniValue::VOBJ: return "object"; + case UniValue::VARR: return "array"; + case UniValue::VSTR: return "string"; + case UniValue::VNUM: return "number"; + } + + // not reached + return NULL; +} + +const UniValue& find_value( const UniValue& obj, const std::string& name) +{ + for (unsigned int i = 0; i < obj.keys.size(); i++) + { + if( obj.keys[i] == name ) + { + return obj.values[i]; + } + } + + return NullUniValue; +} + +std::vector<std::string> UniValue::getKeys() const +{ + if (typ != VOBJ) + throw std::runtime_error("JSON value is not an object as expected"); + return keys; +} + +std::vector<UniValue> UniValue::getValues() const +{ + if (typ != VOBJ && typ != VARR) + throw std::runtime_error("JSON value is not an object or array as expected"); + return values; +} + +bool UniValue::get_bool() const +{ + if (typ != VBOOL) + throw std::runtime_error("JSON value is not a boolean as expected"); + return getBool(); +} + +std::string UniValue::get_str() const +{ + if (typ != VSTR) + throw std::runtime_error("JSON value is not a string as expected"); + return getValStr(); +} + +int UniValue::get_int() const +{ + if (typ != VNUM) + throw std::runtime_error("JSON value is not an integer as expected"); + int32_t retval; + if (!ParseInt32(getValStr(), &retval)) + throw std::runtime_error("JSON integer out of range"); + return retval; +} + +int64_t UniValue::get_int64() const +{ + if (typ != VNUM) + throw std::runtime_error("JSON value is not an integer as expected"); + int64_t retval; + if (!ParseInt64(getValStr(), &retval)) + throw std::runtime_error("JSON integer out of range"); + return retval; +} + +double UniValue::get_real() const +{ + if (typ != VNUM) + throw std::runtime_error("JSON value is not a number as expected"); + double retval; + if (!ParseDouble(getValStr(), &retval)) + throw std::runtime_error("JSON double out of range"); + return retval; +} + +const UniValue& UniValue::get_obj() const +{ + if (typ != VOBJ) + throw std::runtime_error("JSON value is not an object as expected"); + return *this; +} + +const UniValue& UniValue::get_array() const +{ + if (typ != VARR) + throw std::runtime_error("JSON value is not an array as expected"); + return *this; +} + |