366 lines
9.1 KiB
C++
366 lines
9.1 KiB
C++
/*
|
|
* Copyright (c) 2003-2009, John Wiegley. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are
|
|
* met:
|
|
*
|
|
* - Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* - Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* - Neither the name of New Artisans LLC nor the names of its
|
|
* contributors may be used to endorse or promote products derived from
|
|
* this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "format.h"
|
|
#include "scope.h"
|
|
|
|
namespace ledger {
|
|
|
|
void format_t::element_t::dump(std::ostream& out) const
|
|
{
|
|
out << "Element: ";
|
|
|
|
switch (type) {
|
|
case STRING: out << " STRING"; break;
|
|
case EXPR: out << " EXPR"; break;
|
|
}
|
|
|
|
out << " flags: 0x" << std::hex << int(flags());
|
|
out << " min: ";
|
|
out << std::right;
|
|
out.width(2);
|
|
out << std::dec << int(min_width);
|
|
out << " max: ";
|
|
out << std::right;
|
|
out.width(2);
|
|
out << std::dec << int(max_width);
|
|
|
|
switch (type) {
|
|
case STRING: out << " str: '" << chars << "'" << std::endl; break;
|
|
case EXPR: out << " expr: " << expr << std::endl; break;
|
|
}
|
|
}
|
|
|
|
format_t::element_t * format_t::parse_elements(const string& fmt)
|
|
{
|
|
std::auto_ptr<element_t> result;
|
|
|
|
element_t * current = NULL;
|
|
|
|
char buf[1024];
|
|
char * q = buf;
|
|
|
|
// The following format codes need to be implemented as functions:
|
|
//
|
|
// d: COMPLETE_DATE_STRING
|
|
// D: DATE_STRING
|
|
// S: SOURCE; break
|
|
// B: ENTRY_BEG_POS
|
|
// b: ENTRY_BEG_LINE
|
|
// E: ENTRY_END_POS
|
|
// e: ENTRY_END_LINE
|
|
// X: CLEARED
|
|
// Y: ENTRY_CLEARED
|
|
// C: CODE
|
|
// P: PAYEE
|
|
// W: OPT_ACCOUNT
|
|
// a: ACCOUNT_NAME
|
|
// A: ACCOUNT_FULLNAME
|
|
// t: AMOUNT
|
|
// o: OPT_AMOUNT
|
|
// T: TOTAL
|
|
// N: NOTE
|
|
// n: OPT_NOTE
|
|
// _: DEPTH_SPACER
|
|
//
|
|
// xB: XACT_BEG_POS
|
|
// xb: XACT_BEG_LINE
|
|
// xE: XACT_END_POS
|
|
// xe: XACT_END_LINE
|
|
|
|
for (const char * p = fmt.c_str(); *p; p++) {
|
|
if (*p != '%' && *p != '\\') {
|
|
*q++ = *p;
|
|
continue;
|
|
}
|
|
|
|
if (! result.get()) {
|
|
result.reset(new element_t);
|
|
current = result.get();
|
|
} else {
|
|
current->next.reset(new element_t);
|
|
current = current->next.get();
|
|
}
|
|
|
|
if (q != buf) {
|
|
current->type = element_t::STRING;
|
|
current->chars = string(buf, q);
|
|
q = buf;
|
|
|
|
current->next.reset(new element_t);
|
|
current = current->next.get();
|
|
}
|
|
|
|
if (*p == '\\') {
|
|
p++;
|
|
current->type = element_t::STRING;
|
|
switch (*p) {
|
|
case 'b': current->chars = "\b"; break;
|
|
case 'f': current->chars = "\f"; break;
|
|
case 'n': current->chars = "\n"; break;
|
|
case 'r': current->chars = "\r"; break;
|
|
case 't': current->chars = "\t"; break;
|
|
case 'v': current->chars = "\v"; break;
|
|
case '\\': current->chars = "\\"; break;
|
|
default: current->chars = string(1, *p); break;
|
|
}
|
|
continue;
|
|
}
|
|
|
|
++p;
|
|
while (*p == '-') {
|
|
switch (*p) {
|
|
case '-':
|
|
current->add_flags(ELEMENT_ALIGN_LEFT);
|
|
break;
|
|
}
|
|
++p;
|
|
}
|
|
|
|
int num = 0;
|
|
while (*p && std::isdigit(*p)) {
|
|
num *= 10;
|
|
num += *p++ - '0';
|
|
}
|
|
current->min_width = num;
|
|
|
|
if (*p == '.') {
|
|
++p;
|
|
num = 0;
|
|
while (*p && std::isdigit(*p)) {
|
|
num *= 10;
|
|
num += *p++ - '0';
|
|
}
|
|
current->max_width = num;
|
|
if (current->min_width == 0)
|
|
current->min_width = current->max_width;
|
|
}
|
|
|
|
switch (*p) {
|
|
case '%':
|
|
current->type = element_t::STRING;
|
|
current->chars = "%";
|
|
break;
|
|
|
|
case '(':
|
|
case '[': {
|
|
std::istringstream str(p);
|
|
current->type = element_t::EXPR;
|
|
string temp(p);
|
|
current->expr.parse(str, expr_t::PARSE_SINGLE, &temp);
|
|
if (str.eof()) {
|
|
current->expr.set_text(p);
|
|
p += std::strlen(p);
|
|
} else {
|
|
assert(str.good());
|
|
istream_pos_type pos = str.tellg();
|
|
current->expr.set_text(string(p, p + long(pos)));
|
|
p += long(pos) - 1;
|
|
|
|
// Don't gobble up any whitespace
|
|
const char * base = p;
|
|
while (p >= base && std::isspace(*p))
|
|
p--;
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
current->type = element_t::EXPR;
|
|
current->chars = string(FMT_PREFIX) + *p;
|
|
current->expr.parse(current->chars);
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (q != buf) {
|
|
if (! result.get()) {
|
|
result.reset(new element_t);
|
|
current = result.get();
|
|
} else {
|
|
current->next.reset(new element_t);
|
|
current = current->next.get();
|
|
}
|
|
current->type = element_t::STRING;
|
|
current->chars = string(buf, q);
|
|
}
|
|
|
|
return result.release();
|
|
}
|
|
|
|
void format_t::format(std::ostream& out_str, scope_t& scope)
|
|
{
|
|
for (element_t * elem = elements.get(); elem; elem = elem->next.get()) {
|
|
std::ostringstream out;
|
|
string name;
|
|
|
|
if (elem->has_flags(ELEMENT_ALIGN_LEFT))
|
|
out << std::left;
|
|
else
|
|
out << std::right;
|
|
|
|
switch (elem->type) {
|
|
case element_t::STRING:
|
|
if (elem->min_width > 0)
|
|
out.width(elem->min_width);
|
|
out << elem->chars;
|
|
break;
|
|
|
|
case element_t::EXPR:
|
|
try {
|
|
elem->expr.compile(scope);
|
|
|
|
value_t value;
|
|
if (elem->expr.is_function()) {
|
|
call_scope_t args(scope);
|
|
args.push_back(long(elem->max_width));
|
|
value = elem->expr.get_function()(args);
|
|
} else {
|
|
value = elem->expr.calc(scope);
|
|
}
|
|
DEBUG("format.expr", "value = (" << value << ")");
|
|
|
|
value.print(out, elem->min_width);
|
|
}
|
|
catch (const calc_error&) {
|
|
add_error_context("While calculating format expression:");
|
|
add_error_context(expr_context(elem->expr));
|
|
throw;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
assert(false);
|
|
break;
|
|
}
|
|
|
|
if (elem->max_width > 0 || elem->min_width > 0) {
|
|
unistring temp(out.str());
|
|
|
|
string result;
|
|
if (elem->max_width > 0 && elem->max_width < temp.length()) {
|
|
result = truncate(temp, elem->max_width);
|
|
} else {
|
|
result = temp.extract();
|
|
for (int i = 0; i < (int)elem->min_width - (int)temp.length(); i++)
|
|
result += " ";
|
|
}
|
|
out_str << result;
|
|
} else {
|
|
out_str << out.str();
|
|
}
|
|
}
|
|
}
|
|
|
|
string format_t::truncate(const unistring& ustr, std::size_t width,
|
|
const int account_abbrev_length)
|
|
{
|
|
assert(width < 4095);
|
|
|
|
const std::size_t len = ustr.length();
|
|
if (len <= width)
|
|
return ustr.extract();
|
|
|
|
std::ostringstream buf;
|
|
|
|
elision_style_t style = TRUNCATE_TRAILING;
|
|
if (account_abbrev_length > 0)
|
|
style = ABBREVIATE;
|
|
|
|
switch (style) {
|
|
case TRUNCATE_LEADING:
|
|
// This method truncates at the beginning.
|
|
buf << ".." << ustr.extract(len - width, width);
|
|
break;
|
|
|
|
case TRUNCATE_MIDDLE:
|
|
// This method truncates in the middle.
|
|
buf << ustr.extract(0, width / 2)
|
|
<< ".."
|
|
<< ustr.extract(len - (width / 2 + width % 2),
|
|
width / 2 + width % 2);
|
|
break;
|
|
|
|
case ABBREVIATE:
|
|
if (account_abbrev_length > 0) {
|
|
std::list<string> parts;
|
|
string::size_type beg = 0;
|
|
string strcopy(ustr.extract());
|
|
for (string::size_type pos = strcopy.find(':');
|
|
pos != string::npos;
|
|
beg = pos + 1, pos = strcopy.find(':', beg))
|
|
parts.push_back(string(strcopy, beg, pos - beg));
|
|
parts.push_back(string(strcopy, beg));
|
|
|
|
std::ostringstream result;
|
|
|
|
std::size_t newlen = len;
|
|
for (std::list<string>::iterator i = parts.begin();
|
|
i != parts.end();
|
|
i++) {
|
|
// Don't contract the last element
|
|
std::list<string>::iterator x = i;
|
|
if (++x == parts.end()) {
|
|
result << *i;
|
|
break;
|
|
}
|
|
|
|
if (newlen > width) {
|
|
unistring temp(*i);
|
|
result << temp.extract(0, account_abbrev_length) << ":";
|
|
newlen -= temp.length() - account_abbrev_length;
|
|
} else {
|
|
result << *i << ":";
|
|
}
|
|
}
|
|
|
|
if (newlen > width) {
|
|
// Even abbreviated its too big to show the last account, so
|
|
// abbreviate all but the last and truncate at the beginning.
|
|
unistring temp(result.str());
|
|
buf << ".." << temp.extract(temp.length() - width - 2, width - 2);
|
|
} else {
|
|
buf << result.str();
|
|
}
|
|
break;
|
|
}
|
|
// fall through...
|
|
|
|
case TRUNCATE_TRAILING:
|
|
// This method truncates at the end (the default).
|
|
buf << ustr.extract(0, width - 2) << "..";
|
|
break;
|
|
}
|
|
|
|
return buf.str();
|
|
}
|
|
|
|
} // namespace ledger
|