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render doc

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This commit is contained in:
Gabor Adam Toth 2011-04-25 23:14:22 +02:00
parent 4ceb768639
commit 0f9f1bdc94
3 changed files with 46 additions and 16 deletions
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2
include/psyc/parser.h
View file

@ -1,6 +1,6 @@
/**
* @file psyc/parser.h
* @brief Interface for various psyc parser functions.
* @brief Interface for various PSYC parser functions.
*
* All parsing functions and the definitions they use are
* defined in this file.

46
include/psyc/render.h
View file

@ -1,8 +1,37 @@
#ifndef PSYC_RENDER_H
# define PSYC_RENDER_H
#include "syntax.h"
/**
* @file psyc/render.h
* @brief Interface for PSYC packet rendering.
*
* All rendering functions and the definitions they use are
* defined in this file.
*/
/**
* @defgroup rendering Rendering Functions
*
* This module contains all rendering functions.
* @{
*/
/**
* Return codes for PSYC_render.
*/
typedef enum
{
//PSYC_RENDER_ERROR_ROUTING = -2,
PSYC_RENDER_ERROR = -1,
PSYC_RENDER_SUCCESS = 0,
} PSYC_RenderRC;
/**
* Render a PSYC packet into a buffer.
*/
PSYC_RenderRC PSYC_render(PSYC_Packet *packet, char *buffer, size_t buflen);
/*
typedef enum
{
PSYC_RENDER_CHECK_LENGTH = 0,
@ -10,17 +39,12 @@ typedef enum
PSYC_RENDER_NO_LENGTH = 2,
PSYC_RENDER_ROUTING = 3,
} PSYC_RenderFlag;
typedef enum
{
PSYC_RENDER_ERROR_ROUTING = -2,
PSYC_RENDER_ERROR = -1,
PSYC_RENDER_SUCCESS = 0,
} PSYC_RenderRC;
*/
/**
* Struct for keeping render state.
*/
/*
typedef struct
{
PSYC_RenderFlag flag; ///< flags for the renderer
@ -31,9 +55,7 @@ typedef struct
size_t length; ///< how big is the buffer we allocated
char buffer[]; ///< OMG a C99 feature! variable size buffer!
} PSYC_RenderState;
PSYC_RenderRC PSYC_render(PSYC_Packet *packet, char *buffer, size_t buflen);
*/
/**
* Initiates the state struct.
*
@ -52,3 +74,5 @@ int PSYC_renderBody(PSYC_RenderState* render,
const char* data, size_t dlength);
*/
#endif // PSYC_RENDER_H
/** @} */ // end of rendering group

14
src/render.c
View file

@ -1,5 +1,6 @@
#include "psyc/lib.h"
#include "psyc/render.h"
#include "psyc/syntax.h"
inline size_t PSYC_renderModifier(PSYC_Modifier *m, char *buffer)
{
@ -28,38 +29,43 @@ PSYC_RenderRC PSYC_render(PSYC_Packet *packet, char *buffer, size_t buflen)
size_t i, cur = 0;
if (packet->length > buflen)
return PSYC_RENDER_ERROR;
return PSYC_RENDER_ERROR; // return error if packet doesn't fit in buffer
// render routing modifiers
for (i = 0; i < packet->routing.lines; i++)
cur += PSYC_renderModifier(&packet->routing.modifiers[i], buffer + cur);
// add length if needed
if (packet->flag == PSYC_PACKET_NEED_LENGTH) {
//cur += sprintf(buffer + cur, "%ld", packet->contentLength);
cur += itoa(packet->contentLength, buffer + cur, 10);
}
buffer[cur++] = '\n';
buffer[cur++] = '\n'; // start of content part
// render entity modifiers
for (i = 0; i < packet->entity.lines; i++)
cur += PSYC_renderModifier(&packet->entity.modifiers[i], buffer + cur);
if (packet->method.length)
if (packet->method.length) // add method\n
{
memcpy(buffer + cur, packet->method.ptr, packet->method.length);
cur += packet->method.length;
buffer[cur++] = '\n';
}
if (packet->data.length)
if (packet->data.length) // add data\n
{
memcpy(buffer + cur, packet->data.ptr, packet->method.length);
cur += packet->data.length;
buffer[cur++] = '\n';
}
// add packet delimiter
buffer[cur++] = C_GLYPH_PACKET_DELIMITER;
buffer[cur++] = '\n';
// actual length should be equal to pre-calculated length at this point
assert(cur == packet->length);
return PSYC_RENDER_SUCCESS;
}