mirrors
/
xrdp
mirror of https://github.com/neutrinolabs/xrdp
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
xrdp/fontutils/dumpfv1.c

414 lines
11 KiB
C
Raw Blame History

/**
* xrdp: A Remote Desktop Protocol server.
*
* Copyright (C) Jay Sorg 2004-2022
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* fonts
*/
#if defined(HAVE_CONFIG_H)
#include <config_ac.h>
#endif
#include <limits.h>
#include <unistd.h>
#include <ctype.h>
#include "list.h"
#include "os_calls.h"
#include "parse.h"
#include "string_calls.h"
#include "fv1.h"
/**
* What the program is doing
*/
enum program_mode
{
PM_UNSPECIFIED = 0,
PM_INFO,
PM_GLYPH_INFO_TABLE,
PM_SHOW_CHAR
};
/**
* Parsed program arguments
*/
struct program_args
{
const char *font_file;
enum program_mode mode;
int ucode; /* Unicode character to display in 'c' mode */
};
/**************************************************************************//**
* Parses the program args
*
* @param argc Passed to main
* @param @argv Passed to main
* @param pa program_pargs structure for resulting values
* @return !=0 for success
*/
static int
parse_program_args(int argc, char *argv[], struct program_args *pa)
{
int params_ok = 1;
int opt;
pa->font_file = NULL;
pa->mode = PM_UNSPECIFIED;
pa->ucode = 0;
while ((opt = getopt(argc, argv, "c:it")) != -1)
{
switch (opt)
{
case 'i':
if (pa->mode == PM_UNSPECIFIED)
{
pa->mode = PM_INFO;
}
else
{
LOG(LOG_LEVEL_ERROR, "Can't have two modes set");
params_ok = 0;
}
break;
case 't':
if (pa->mode == PM_UNSPECIFIED)
{
pa->mode = PM_GLYPH_INFO_TABLE;
}
else
{
LOG(LOG_LEVEL_ERROR, "Can't have two modes set");
params_ok = 0;
}
break;
case 'c':
if (pa->mode == PM_UNSPECIFIED)
{
pa->mode = PM_SHOW_CHAR;
if (toupper(optarg[0]) == 'U' && optarg[1] == '+')
{
char *hex = g_strdup(optarg);
hex[0] = '0';
hex[1] = 'x';
pa->ucode = g_atoix(hex);
g_free(hex);
}
else if (optarg[0] == '@')
{
pa->ucode = optarg[1];
}
else
{
pa->ucode = g_atoix(optarg);
}
}
else
{
LOG(LOG_LEVEL_ERROR, "Can't have two modes set");
params_ok = 0;
}
break;
default:
LOG(LOG_LEVEL_ERROR, "Unrecognised switch '%c'", (char)opt);
params_ok = 0;
}
}
if (argc <= optind)
{
LOG(LOG_LEVEL_ERROR, "No font file specified");
params_ok = 0;
}
else if ((argc - optind) > 1)
{
LOG(LOG_LEVEL_ERROR, "Unexpected arguments after font file");
params_ok = 0;
}
else
{
pa->font_file = argv[optind];
}
return params_ok;
}
/**************************************************************************//**
* Displays information about a font file
*
* @param fv1 loaded font file
*/
static void
display_font_file_info(const struct fv1_file *fv1)
{
g_printf("Font name : %s\n", fv1->font_name);
g_printf("Point size (%d DPI) : %d\n", FV1_DEVICE_DPI, fv1->point_size);
g_printf("Style : %d\n", fv1->style);
if (fv1->body_height == 0 && fv1->glyphs->count > 0)
{
const struct fv1_glyph *g =
(const struct fv1_glyph *)fv1->glyphs->items[0];
g_printf("Body height : %d (from 1st glyph)\n", -g->baseline + 1);
}
else
{
g_printf("Body height : %d\n", fv1->body_height);
}
g_printf("Descender : %d\n", fv1->min_descender);
if (fv1->glyphs->count == 0)
{
g_printf("\nFile contains no glyphs\n");
}
else
{
g_printf("Min glyph index : U+%04X\n", FV1_MIN_CHAR);
g_printf("Max glyph index : U+%04X\n", FV1_GLYPH_END(fv1) - 1);
/* Work out the statistics */
unsigned short max_width = 0;
int max_width_ucode = 0;
unsigned short max_height = 0;
int max_height_ucode = 0;
short min_baseline = 0;
int min_baseline_ucode = 0;
short min_offset = 0;
int min_offset_ucode = 0;
short max_offset = 0;
int max_offset_ucode = 0;
unsigned short max_inc_by = 0;
int max_inc_by_ucode = 0;
/* Derived quantities */
short min_y_descender = SHRT_MAX;
int min_y_descender_ucode = 0;
int max_datasize = -1;
int max_datasize_ucode = 0;
/* Loop and output macros */
#define SET_MIN(ucode,field,val) \
if ((field) < (val)) \
{ \
val = (field); \
val##_ucode = (ucode); \
}
#define SET_MAX(ucode,field,val) \
if ((field) > (val)) \
{ \
val = (field); \
val##_ucode = (ucode); \
}
#define OUTPUT_INFO(string, val) \
if (val##_ucode > 0) \
{ \
g_printf(string, val, val##_ucode); \
}
int u;
for (u = FV1_MIN_CHAR ; u < FV1_GLYPH_END(fv1); ++u)
{
const struct fv1_glyph *g = FV1_GET_GLYPH(fv1, u);
if (g != NULL)
{
short y_descender = - (g->baseline + g->height);
int datasize = FONT_DATASIZE(g);
SET_MAX(u, g->width, max_width);
SET_MAX(u, g->height, max_height);
SET_MIN(u, g->baseline, min_baseline);
SET_MIN(u, g->offset, min_offset);
SET_MAX(u, g->offset, max_offset);
SET_MAX(u, g->inc_by, max_inc_by);
SET_MIN(u, y_descender, min_y_descender);
SET_MAX(u, datasize, max_datasize);
}
}
OUTPUT_INFO("Max glyph width : %d (U+%04X)\n", max_width);
OUTPUT_INFO("Max glyph height : %d (U+%04X)\n", max_height);
OUTPUT_INFO("Min glyph y-baseline : %d (U+%04X)\n", min_baseline);
OUTPUT_INFO("Min glyph y-descender : %d (U+%04X)\n", min_y_descender);
OUTPUT_INFO("Min glyph x-offset : %d (U+%04X)\n", min_offset);
OUTPUT_INFO("Max glyph x-offset : %d (U+%04X)\n", max_offset);
OUTPUT_INFO("Max glyph x-inc_by : %d (U+%04X)\n", max_inc_by);
OUTPUT_INFO("Max glyph datasize : %d (U+%04X)\n", max_datasize);
#undef SET_MIN
#undef SET_MAX
#undef OUTPUT_INFO
}
}
/**************************************************************************//**
* Display info in a table about all the glyphs
* @param fv1 font file
*/
static void
display_glyph_info_table(const struct fv1_file *fv1)
{
int u;
g_printf("character,width,height,baseline,offset,inc_by,datasize\n");
for (u = FV1_MIN_CHAR; u < FV1_GLYPH_END(fv1); ++u)
{
const struct fv1_glyph *g = FV1_GET_GLYPH(fv1, u);
if (g != NULL)
{
int datasize = FONT_DATASIZE(g);
g_printf("%d,%hu,%hu,%hd,%hd,%hu,%d\n",
u, g->width, g->height, g->baseline,
g->offset, g->inc_by, datasize);
}
}
}
/**************************************************************************//**
* Converts a font data row to a printable string
*
* @param rowdata Pointer to the first byte of the row data
* @param width Number of pixels in the row
* @param out Output buffer. Must be sized by the caller to be at
* least width+1 bytes
*/
static void
row_to_str(const unsigned char *rowdata, int width, char *out)
{
int x;
int mask = 1 << 7;
for (x = 0 ; x < width ; ++x)
{
out[x] = ((*rowdata & mask) != 0) ? 'X' : '.';
mask >>= 1;
if (mask == 0)
{
mask = 1 << 7;
++rowdata;
}
}
out[width] = '\0';
}
/**************************************************************************//**
* Display info about a specific glyph
* @param ucode Unicode character value
* @param g Glyph
*/
static void
display_glyph_info(int ucode, const struct fv1_glyph *g)
{
char *row_buffer = (char *)g_malloc(g->width + 1, 0);
if (row_buffer == NULL)
{
g_printf("<No memory>\n");
}
else
{
g_printf("Glyph : U+%04X\n", ucode);
g_printf(" Width : %d\n", g->width);
g_printf(" Height : %d\n", g->height);
g_printf(" Baseline : %d\n", g->baseline);
g_printf(" Offset : %d\n", g->offset);
g_printf(" Inc By : %d\n", g->inc_by);
g_printf(" Data :\n");
int y;
const unsigned char *dataptr = g->data;
for (y = 0 ; y < g->height; ++y)
{
row_to_str(dataptr, g->width, row_buffer);
g_printf(" %+3d: %s\n", y + g->baseline, row_buffer);
dataptr += (g->width + 7) / 8;
}
g_free(row_buffer);
}
}
/**************************************************************************//**
* Main
*
* @param argc Argument count
* @param argv Arguments
*/
int
main(int argc, char *argv[])
{
struct fv1_file *fv1 = NULL;
struct log_config *logging;
struct program_args pa;
int rv = 1;
logging = log_config_init_for_console(LOG_LEVEL_WARNING,
g_getenv("DUMPFV1_LOG_LEVEL"));
log_start_from_param(logging);
log_config_free(logging);
if (parse_program_args(argc, argv, &pa) &&
(fv1 = fv1_file_load(pa.font_file)) != NULL)
{
switch (pa.mode)
{
case PM_INFO:
display_font_file_info(fv1);
rv = 0;
break;
case PM_GLYPH_INFO_TABLE:
display_glyph_info_table(fv1);
rv = 0;
break;
case PM_SHOW_CHAR:
if (pa.ucode < FV1_MIN_CHAR)
{
LOG(LOG_LEVEL_ERROR, "Value for -c must be at least U+%04X",
FV1_MIN_CHAR);
}
else if (pa.ucode >= FV1_GLYPH_END(fv1))
{
LOG(LOG_LEVEL_ERROR,
"Value for -c must be less than U+%04X",
FV1_GLYPH_END(fv1));
}
else
{
const struct fv1_glyph *g =
(const struct fv1_glyph *)
list_get_item(fv1->glyphs, pa.ucode - FV1_MIN_CHAR);
display_glyph_info(pa.ucode, g);
rv = 0;
}
break;
default:
LOG(LOG_LEVEL_ERROR, "Specify one of '-i' or '-c'");
break;
}
}
fv1_file_free(fv1);
log_end();
return rv;
}
Reference in New Issue View Git Blame Copy Permalink