2021-04-17 02:41:46 +02:00
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//
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// PDF array functions for pdfio.
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//
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// Copyright © 2021 by Michael R Sweet.
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//
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// Licensed under Apache License v2.0. See the file "LICENSE" for more
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// information.
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//
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//
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// Include necessary headers...
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//
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#include "pdfio-private.h"
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//
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2021-04-25 17:28:56 +02:00
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// Array structure
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2021-04-17 02:41:46 +02:00
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//
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2021-04-25 17:28:56 +02:00
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struct _pdfio_array_s
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{
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size_t num_values, // Number of values in use
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alloc_values; // Number of allocated values
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_pdfio_value_t *values; // Array of values
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};
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//
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// Local functions...
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//
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static bool append_value(pdfio_array_t *a, _pdfio_value_t *v);
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//
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// 'pdfioArrayAppendArray()' - Add an array value to an array.
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//
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendArray(
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pdfio_array_t *a, // I - Array
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pdfio_array_t *value) // I - Value
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{
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_pdfio_value_t v; // Value for array
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v.type = PDFIO_VALTYPE_ARRAY;
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v.value.array = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendBoolean()' - Add a boolean value to an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendBoolean(
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pdfio_array_t *a, // I - Array
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bool value) // I - Value
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{
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_pdfio_value_t v; // Value for array
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v.type = PDFIO_VALTYPE_BOOLEAN;
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v.value.boolean = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendDict()' - Add a dictionary to an array.
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//
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2021-04-26 00:12:24 +02:00
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendDict(
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pdfio_array_t *a, // I - Array
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pdfio_dict_t *value) // I - Value
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{
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_pdfio_value_t v; // Value for array
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v.type = PDFIO_VALTYPE_DICT;
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v.value.dict = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendName()' - Add a name to an array.
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2021-04-17 02:41:46 +02:00
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//
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendName(
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pdfio_array_t *a, // I - Array
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const char *value) // I - Value
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{
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_pdfio_value_t v; // Value for array
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v.type = PDFIO_VALTYPE_NAME;
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v.value.name = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendNumber()' - Add a number to an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendNumber(
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pdfio_array_t *a, // I - Array
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float value) // I - Value
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2021-04-17 02:41:46 +02:00
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{
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_pdfio_value_t v; // Value for array
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v.type = PDFIO_VALTYPE_NUMBER;
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v.value.number = value;
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return (append_value(a, &v));
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendObject()' - Add an indirect object reference to an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendObject(
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pdfio_array_t *a, // I - Array
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pdfio_obj_t *value) // I - Value
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{
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_pdfio_value_t v; // Value for array
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v.type = PDFIO_VALTYPE_INDIRECT;
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v.value.obj = value;
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return (append_value(a, &v));
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayAppendString()' - Add a string to an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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bool // O - `true` on success, `false` on failure
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pdfioArrayAppendString(
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pdfio_array_t *a, // I - Array
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const char *value) // I - Value
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{
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_pdfio_value_t v; // Value for array
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v.type = PDFIO_VALTYPE_STRING;
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v.value.string = value;
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return (append_value(a, &v));
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}
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//
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// 'pdfioArrayCreate()' - Create an empty array.
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//
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pdfio_array_t * // O - New array or `NULL` on error
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pdfioArrayCreate(pdfio_file_t *pdf) // I - PDF file
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{
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pdfio_array_t *a; // Array
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if (!pdf)
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return (NULL);
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if ((a = (pdfio_array_t *)calloc(1, sizeof(pdfio_array_t))) == NULL)
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return (NULL);
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if (pdf->num_arrays >= pdf->alloc_arrays)
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{
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pdfio_array_t **temp = realloc(pdf->arrays, (pdf->alloc_arrays + 16) * sizeof(pdfio_array_t *));
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if (!temp)
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{
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free(a);
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return (NULL);
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}
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pdf->arrays = temp;
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pdf->alloc_arrays += 16;
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}
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pdf->arrays[pdf->num_arrays ++] = a;
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return (a);
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}
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2021-04-17 03:09:43 +02:00
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//
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// '_pdfioArrayDelete()' - Free the memory used by an array.
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//
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void
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_pdfioArrayDelete(pdfio_array_t *a) // I - Array
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{
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if (a)
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free(a->values);
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free(a);
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}
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//
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// 'pdfioArrayGetArray()' - Get an array value from an array.
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//
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pdfio_array_t * // O - Value
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pdfioArrayGetArray(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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{
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_ARRAY)
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return (NULL);
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else
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return (a->values[n].value.array);
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}
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//
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// 'pdfioArrayGetBoolean()' - Get a boolean value from an array.
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//
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bool // O - Value
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pdfioArrayGetBoolean(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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{
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_BOOLEAN)
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return (false);
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else
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return (a->values[n].value.boolean);
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}
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//
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// 'pdfioArrayGetDict()' - Get a dictionary value from an array.
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//
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pdfio_dict_t * // O - Value
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pdfioArrayGetDict(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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{
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_DICT)
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return (NULL);
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else
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return (a->values[n].value.dict);
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}
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//
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// 'pdfioArrayGetName()' - Get a name value from an array.
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//
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const char * // O - Value
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pdfioArrayGetName(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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{
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_NAME)
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return (NULL);
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else
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return (a->values[n].value.name);
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}
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//
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// 'pdfioArrayGetNumber()' - Get a number from an array.
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//
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float // O - Value
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pdfioArrayGetNumber(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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{
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_NUMBER)
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return (0.0f);
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else
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return (a->values[n].value.number);
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}
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//
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// 'pdfioArrayGetObject()' - Get an indirect object reference from an array.
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//
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pdfio_obj_t * // O - Value
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pdfioArrayGetObject(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_INDIRECT)
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return (NULL);
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else
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return (a->values[n].value.obj);
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetSize()' - Get the length of an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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size_t // O - Length of array
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pdfioArrayGetSize(pdfio_array_t *a) // I - Array
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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return (a ? a->num_values : 0);
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2021-04-17 02:41:46 +02:00
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}
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//
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2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetString()' - Get a string value from an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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const char * // O - Value
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pdfioArrayGetString(pdfio_array_t *a, // I - Array
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size_t n) // I - Index
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2021-04-17 02:41:46 +02:00
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{
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2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values || a->values[n].type != PDFIO_VALTYPE_STRING)
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return (NULL);
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else
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return (a->values[n].value.string);
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2021-04-17 02:41:46 +02:00
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}
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//
|
2021-04-26 00:12:24 +02:00
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// 'pdfioArrayGetType()' - Get a value type from an array.
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2021-04-17 02:41:46 +02:00
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//
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2021-04-26 00:12:24 +02:00
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pdfio_valtype_t // O - Value type
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pdfioArrayGetType(pdfio_array_t *a, // I - Array
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|
size_t n) // I - Index
|
2021-04-17 02:41:46 +02:00
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|
{
|
2021-04-26 00:12:24 +02:00
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if (!a || n >= a->num_values)
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return (PDFIO_VALTYPE_NONE);
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else
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return (a->values[n].type);
|
2021-04-17 02:41:46 +02:00
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}
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|
2021-04-25 17:28:56 +02:00
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//
|
2021-04-26 00:12:24 +02:00
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// '_pdfioArrayGetValue()' - Get a value from an array.
|
2021-04-25 17:28:56 +02:00
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|
//
|
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|
2021-04-26 00:12:24 +02:00
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|
_pdfio_value_t * // O - Value
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|
_pdfioArrayGetValue(pdfio_array_t *a, // I - Array
|
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|
|
size_t n) // I - Index
|
2021-04-25 17:28:56 +02:00
|
|
|
|
{
|
2021-04-26 00:12:24 +02:00
|
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|
|
if (!a || n >= a->num_values)
|
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|
|
return (NULL);
|
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|
|
else
|
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|
|
return (a->values + n);
|
2021-04-25 17:28:56 +02:00
|
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|
|
}
|
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|
|
//
|
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|
|
// 'append_value()' - Append a value.
|
|
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|
|
//
|
|
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|
|
static bool // O - `true` on success, `false` otherwise
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|
|
append_value(pdfio_array_t *a, // I - Array
|
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|
|
_pdfio_value_t *v) // I - Value
|
|
|
|
|
{
|
|
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|
|
if (!a)
|
|
|
|
|
return (false);
|
|
|
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|
|
if (a->num_values >= a->alloc_values)
|
|
|
|
|
{
|
|
|
|
|
_pdfio_value_t *temp = (_pdfio_value_t *)realloc(a->values, (a->alloc_values + 16) * sizeof(_pdfio_value_t));
|
|
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|
|
if (!temp)
|
|
|
|
|
return (false);
|
|
|
|
|
|
|
|
|
|
a->values = temp;
|
|
|
|
|
a->alloc_values += 16;
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
a->values[a->num_values ++] = *v;
|
|
|
|
|
|
|
|
|
|
return (true);
|
|
|
|
|
}
|