mirror of
https://github.com/michaelrsweet/pdfio.git
synced 2024-07-01 11:09:50 +02:00
Implement pdfioDictIterateKeys API (Issue #31)
This commit is contained in:
Michael R Sweet
parent
ed4e2fc38a
commit
f4b8983c61
|
|
@ -6,6 +6,7 @@ v1.1.0 (Month DD, YYYY)
|
|||
-----------------------
|
||||
|
||||
- Added `pdfioFileCreateTemporary` function (Issue #29)
|
||||
- Added `pdfioDictIterateKeys` function (Issue #31)
|
||||
|
||||
|
||||
v1.0.1 (March 2, 2022)
|
||||
|
|
|
|||
33
doc/pdfio.3
33
doc/pdfio.3
|
|
@ -1,4 +1,4 @@
|
|||
.TH pdfio 3 "pdf read/write library" "2022-05-15" "pdf read/write library"
|
||||
.TH pdfio 3 "pdf read/write library" "2022-06-27" "pdf read/write library"
|
||||
.SH NAME
|
||||
pdfio \- pdf read/write library
|
||||
.SH Introduction
|
||||
|
|
@ -1950,6 +1950,31 @@ pdfio_valtype_t pdfioDictGetType (
|
|||
const char *key
|
||||
);
|
||||
.fi
|
||||
.SS pdfioDictIterateKeys
|
||||
Iterate the keys in a dictionary.
|
||||
.PP
|
||||
.nf
|
||||
void pdfioDictIterateKeys (
|
||||
pdfio_dict_t *dict,
|
||||
pdfio_dict_cb_t cb,
|
||||
void *cb_data
|
||||
);
|
||||
.fi
|
||||
.PP
|
||||
This function iterates the keys in a dictionary, calling the supplied
|
||||
function "cb":
|
||||
.PP
|
||||
.nf
|
||||
bool
|
||||
my_dict_cb(pdfio_dict_t *dict, const char *key, void *cb_data)
|
||||
{
|
||||
... "key" contains the dictionary key ...
|
||||
... return true to continue or false to stop ...
|
||||
}
|
||||
|
||||
.fi
|
||||
The iteration continues as long as the callback returns \fBtrue\fR or all keys
|
||||
have been iterated.
|
||||
.SS pdfioDictSetArray
|
||||
Set a key array in a dictionary.
|
||||
.PP
|
||||
|
|
@ -2889,6 +2914,12 @@ Standard color spaces
|
|||
.nf
|
||||
typedef enum pdfio_cs_e pdfio_cs_t;
|
||||
.fi
|
||||
.SS pdfio_dict_cb_t
|
||||
Dictionary iterator callback
|
||||
.PP
|
||||
.nf
|
||||
typedef bool(*)(pdfio_dict_t *dict, const char *key, void *cb_data) pdfio_dict_cb_t;
|
||||
.fi
|
||||
.SS pdfio_dict_t
|
||||
Key/value dictionary
|
||||
.PP
|
||||
|
|
|
|||
|
|
@ -360,6 +360,7 @@ span.string {
|
|||
<li><a href="#pdfioDictGetRect">pdfioDictGetRect</a></li>
|
||||
<li><a href="#pdfioDictGetString">pdfioDictGetString</a></li>
|
||||
<li><a href="#pdfioDictGetType">pdfioDictGetType</a></li>
|
||||
<li><a href="#pdfioDictIterateKeys">pdfioDictIterateKeys</a></li>
|
||||
<li><a href="#pdfioDictSetArray">pdfioDictSetArray</a></li>
|
||||
<li><a href="#pdfioDictSetBinary">pdfioDictSetBinary</a></li>
|
||||
<li><a href="#pdfioDictSetBoolean">pdfioDictSetBoolean</a></li>
|
||||
|
|
@ -443,6 +444,7 @@ span.string {
|
|||
<li><a href="#TYPES">Data Types</a><ul class="subcontents">
|
||||
<li><a href="#pdfio_array_t">pdfio_array_t</a></li>
|
||||
<li><a href="#pdfio_cs_t">pdfio_cs_t</a></li>
|
||||
<li><a href="#pdfio_dict_cb_t">pdfio_dict_cb_t</a></li>
|
||||
<li><a href="#pdfio_dict_t">pdfio_dict_t</a></li>
|
||||
<li><a href="#pdfio_encryption_t">pdfio_encryption_t</a></li>
|
||||
<li><a href="#pdfio_error_cb_t">pdfio_error_cb_t</a></li>
|
||||
|
|
@ -2262,6 +2264,33 @@ const char *pdfioDictGetString(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict, c
|
|||
</tbody></table>
|
||||
<h4 class="returnvalue">Return Value</h4>
|
||||
<p class="description">Value type</p>
|
||||
<h3 class="function"><a id="pdfioDictIterateKeys">pdfioDictIterateKeys</a></h3>
|
||||
<p class="description">Iterate the keys in a dictionary.</p>
|
||||
<p class="code">
|
||||
void pdfioDictIterateKeys(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict, <a href="#pdfio_dict_cb_t">pdfio_dict_cb_t</a> cb, void *cb_data);</p>
|
||||
<h4 class="parameters">Parameters</h4>
|
||||
<table class="list"><tbody>
|
||||
<tr><th>dict</th>
|
||||
<td class="description">Dictionary</td></tr>
|
||||
<tr><th>cb</th>
|
||||
<td class="description">Callback function</td></tr>
|
||||
<tr><th>cb_data</th>
|
||||
<td class="description">Callback data</td></tr>
|
||||
</tbody></table>
|
||||
<h4 class="discussion">Discussion</h4>
|
||||
<p class="discussion">This function iterates the keys in a dictionary, calling the supplied
|
||||
function "cb":
|
||||
|
||||
<pre>
|
||||
bool
|
||||
my_dict_cb(pdfio_dict_t *dict, const char *key, void *cb_data)
|
||||
{
|
||||
... "key" contains the dictionary key ...
|
||||
... return true to continue or false to stop ...
|
||||
}
|
||||
</pre>
|
||||
The iteration continues as long as the callback returns <code>true</code> or all keys
|
||||
have been iterated.</p>
|
||||
<h3 class="function"><a id="pdfioDictSetArray">pdfioDictSetArray</a></h3>
|
||||
<p class="description">Set a key array in a dictionary.</p>
|
||||
<p class="code">
|
||||
|
|
@ -3514,6 +3543,11 @@ typedef struct _pdfio_array_s pdfio_array_t;
|
|||
<p class="code">
|
||||
typedef enum <a href="#pdfio_cs_e">pdfio_cs_e</a> pdfio_cs_t;
|
||||
</p>
|
||||
<h3 class="typedef"><a id="pdfio_dict_cb_t">pdfio_dict_cb_t</a></h3>
|
||||
<p class="description">Dictionary iterator callback</p>
|
||||
<p class="code">
|
||||
typedef bool (*pdfio_dict_cb_t)(<a href="#pdfio_dict_t">pdfio_dict_t</a> *dict, const char *key, void *cb_data);
|
||||
</p>
|
||||
<h3 class="typedef"><a id="pdfio_dict_t">pdfio_dict_t</a></h3>
|
||||
<p class="description">Key/value dictionary</p>
|
||||
<p class="code">
|
||||
|
|
|
|||
41
pdfio-dict.c
41
pdfio-dict.c
|
|
@ -464,6 +464,47 @@ _pdfioDictGetValue(pdfio_dict_t *dict, // I - Dictionary
|
|||
}
|
||||
|
||||
|
||||
//
|
||||
// 'pdfioDictIterateKeys()' - Iterate the keys in a dictionary.
|
||||
//
|
||||
// This function iterates the keys in a dictionary, calling the supplied
|
||||
// function "cb":
|
||||
//
|
||||
// ```
|
||||
// bool
|
||||
// my_dict_cb(pdfio_dict_t *dict, const char *key, void *cb_data)
|
||||
// {
|
||||
// ... "key" contains the dictionary key ...
|
||||
// ... return true to continue or false to stop ...
|
||||
// }
|
||||
// ```
|
||||
//
|
||||
// The iteration continues as long as the callback returns `true` or all keys
|
||||
// have been iterated.
|
||||
//
|
||||
|
||||
void
|
||||
pdfioDictIterateKeys(
|
||||
pdfio_dict_t *dict, // I - Dictionary
|
||||
pdfio_dict_cb_t cb, // I - Callback function
|
||||
void *cb_data) // I - Callback data
|
||||
{
|
||||
size_t i; // Looping var
|
||||
_pdfio_pair_t *pair; // Current pair
|
||||
|
||||
|
||||
// Range check input...
|
||||
if (!dict || !cb)
|
||||
return;
|
||||
|
||||
for (i = dict->num_pairs, pair = dict->pairs; i > 0; i --, pair ++)
|
||||
{
|
||||
if (!(cb)(dict, pair->key, cb_data))
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// '_pdfioDictRead()' - Read a dictionary from a PDF file.
|
||||
//
|
||||
|
|
|
|||
3
pdfio.h
3
pdfio.h
|
|
@ -55,6 +55,8 @@ typedef struct _pdfio_array_s pdfio_array_t;
|
|||
// Array of PDF values
|
||||
typedef struct _pdfio_dict_s pdfio_dict_t;
|
||||
// Key/value dictionary
|
||||
typedef bool (*pdfio_dict_cb_t)(pdfio_dict_t *dict, const char *key, void *cb_data);
|
||||
// Dictionary iterator callback
|
||||
typedef struct _pdfio_file_s pdfio_file_t;
|
||||
// PDF file
|
||||
typedef bool (*pdfio_error_cb_t)(pdfio_file_t *pdf, const char *message, void *data);
|
||||
|
|
@ -165,6 +167,7 @@ extern pdfio_obj_t *pdfioDictGetObj(pdfio_dict_t *dict, const char *key) _PDFIO_
|
|||
extern pdfio_rect_t *pdfioDictGetRect(pdfio_dict_t *dict, const char *key, pdfio_rect_t *rect) _PDFIO_PUBLIC;
|
||||
extern const char *pdfioDictGetString(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
|
||||
extern pdfio_valtype_t pdfioDictGetType(pdfio_dict_t *dict, const char *key) _PDFIO_PUBLIC;
|
||||
extern void pdfioDictIterateKeys(pdfio_dict_t *dict, pdfio_dict_cb_t cb, void *cb_data) _PDFIO_PUBLIC;
|
||||
extern bool pdfioDictSetArray(pdfio_dict_t *dict, const char *key, pdfio_array_t *value) _PDFIO_PUBLIC;
|
||||
extern bool pdfioDictSetBinary(pdfio_dict_t *dict, const char *key, const unsigned char *value, size_t valuelen) _PDFIO_PUBLIC;
|
||||
extern bool pdfioDictSetBoolean(pdfio_dict_t *dict, const char *key, bool value) _PDFIO_PUBLIC;
|
||||
|
|
|
|||
59
testpdfio.c
59
testpdfio.c
|
|
@ -34,6 +34,7 @@ static int do_test_file(const char *filename, int objnum, bool verbose);
|
|||
static int do_unit_tests(void);
|
||||
static int draw_image(pdfio_stream_t *st, const char *name, double x, double y, double w, double h, const char *label);
|
||||
static bool error_cb(pdfio_file_t *pdf, const char *message, bool *error);
|
||||
static bool iterate_cb(pdfio_dict_t *dict, const char *key, void *cb_data);
|
||||
static ssize_t output_cb(int *fd, const void *buffer, size_t bytes);
|
||||
static const char *password_cb(void *data, const char *filename);
|
||||
static int read_unit_file(const char *filename, size_t num_pages, size_t first_image, bool is_output);
|
||||
|
|
@ -507,6 +508,8 @@ do_unit_tests(void)
|
|||
size_t first_image, // First image object
|
||||
num_pages; // Number of pages written
|
||||
char temppdf[1024]; // Temporary PDF file
|
||||
pdfio_dict_t *dict; // Test dictionary
|
||||
int count = 0; // Number of key/value pairs
|
||||
static const char *complex_dict = // Complex dictionary value
|
||||
"<</Annots 5457 0 R/Contents 5469 0 R/CropBox[0 0 595.4 842]/Group 725 0 R"
|
||||
"/MediaBox[0 0 595.4 842]/Parent 23513 0 R/Resources<</ColorSpace<<"
|
||||
|
|
@ -968,6 +971,41 @@ do_unit_tests(void)
|
|||
|
||||
// TODO: Test for known values in this test file.
|
||||
|
||||
// Test dictionary APIs
|
||||
fputs("pdfioDictCreate: ", stdout);
|
||||
if ((dict = pdfioDictCreate(inpdf)) != NULL)
|
||||
{
|
||||
puts("PASS");
|
||||
|
||||
fputs("pdfioDictSet*: ", stdout);
|
||||
if (pdfioDictSetBoolean(dict, "Boolean", true) && pdfioDictSetName(dict, "Name", "Name") && pdfioDictSetNumber(dict, "Number", 42.0) && pdfioDictSetString(dict, "String", "String"))
|
||||
{
|
||||
puts("PASS");
|
||||
}
|
||||
else
|
||||
{
|
||||
puts("FAIL");
|
||||
return (1);
|
||||
}
|
||||
|
||||
fputs("pdfioDictIterateKeys: ", stdout);
|
||||
pdfioDictIterateKeys(dict, iterate_cb, &count);
|
||||
if (count == 4)
|
||||
{
|
||||
puts("PASS");
|
||||
}
|
||||
else
|
||||
{
|
||||
printf("FAIL (got %d, expected 4)\n", count);
|
||||
return (1);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
puts("FAIL");
|
||||
return (1);
|
||||
}
|
||||
|
||||
// Test the value parsers for edge cases...
|
||||
fputs("_pdfioValueRead(complex_dict): ", stdout);
|
||||
s = complex_dict;
|
||||
|
|
@ -1212,6 +1250,27 @@ error_cb(pdfio_file_t *pdf, // I - PDF file
|
|||
}
|
||||
|
||||
|
||||
//
|
||||
// 'iterate_cb()' - Test pdfioDictIterateKeys function.
|
||||
//
|
||||
|
||||
static bool // O - `true` to continue, `false` to stop
|
||||
iterate_cb(pdfio_dict_t *dict, // I - Dictionary
|
||||
const char *key, // I - Key
|
||||
void *cb_data) // I - Callback data
|
||||
{
|
||||
int *count = (int *)cb_data; // Pointer to counter
|
||||
|
||||
|
||||
if (!dict || !key || !cb_data)
|
||||
return (false);
|
||||
|
||||
(*count)++;
|
||||
|
||||
return (true);
|
||||
}
|
||||
|
||||
|
||||
//
|
||||
// 'output_cb()' - Write output to a file.
|
||||
//
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user