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libpsyc/src/variable.c

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#include <psyc/lib.h>
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#include <stdint.h>
/// Routing variables in alphabetical order.
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const psycString psyc_routingVars[] =
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{
PSYC_C2STR("_amount_fragments"),
PSYC_C2STR("_context"),
//PSYC_C2STR("_count"), // older PSYC
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PSYC_C2STR("_counter"), // the name for this is supposed to be _count, not _counter
PSYC_C2STR("_fragment"),
//PSYC_C2STR("_length"), // older PSYC
PSYC_C2STR("_source"),
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//PSYC_C2STR("_source_identification"), // older PSYC
PSYC_C2STR("_source_identity"),
PSYC_C2STR("_source_relay"),
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PSYC_C2STR("_source_relay_relay"), // until you have a better idea.. is this really in use?
PSYC_C2STR("_tag"),
PSYC_C2STR("_tag_relay"),
//PSYC_C2STR("_tag_reply"), // older PSYC
PSYC_C2STR("_target"),
PSYC_C2STR("_target_forward"),
PSYC_C2STR("_target_relay"),
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//PSYC_C2STR("_understand_modules"), // older PSYC
//PSYC_C2STR("_using_modules"), // older PSYC
};
const psycMatchVar psyc_varTypes[] =
{
{PSYC_C2STR("_amount"), PSYC_TYPE_AMOUNT},
{PSYC_C2STR("_color"), PSYC_TYPE_COLOR},
{PSYC_C2STR("_date"), PSYC_TYPE_DATE},
{PSYC_C2STR("_degree"), PSYC_TYPE_DEGREE},
{PSYC_C2STR("_entity"), PSYC_TYPE_ENTITY},
{PSYC_C2STR("_flag"), PSYC_TYPE_FLAG},
{PSYC_C2STR("_language"), PSYC_TYPE_LANGUAGE},
{PSYC_C2STR("_list"), PSYC_TYPE_LIST},
{PSYC_C2STR("_nick"), PSYC_TYPE_NICK},
{PSYC_C2STR("_page"), PSYC_TYPE_PAGE},
{PSYC_C2STR("_uniform"), PSYC_TYPE_UNIFORM},
{PSYC_C2STR("_time"), PSYC_TYPE_TIME},
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};
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const size_t psyc_routingVarsNum = PSYC_NUM_ELEM(psyc_routingVars);
const size_t psyc_varTypesNum = PSYC_NUM_ELEM(psyc_varTypes);
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/**
* Get the type of variable name.
*/
psycBool psyc_isRoutingVar(const char *name, size_t len)
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{
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//return psyc_matchArray(psyc_routingVars, PSYC_NUM_ELEM(psyc_routingVars), name, len, 0);
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size_t cursor = 1;
uint8_t i, m = 0;
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int8_t matching[psyc_routingVarsNum]; // indexes of matching vars
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if (len < 2 || name[0] != '_')
return PSYC_FALSE;
// first find the vars with matching length
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for (i=0; i<psyc_routingVarsNum; i++)
if (len == psyc_routingVars[i].length)
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matching[m++] = i;
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matching[m] = -1; // mark the end of matching indexes
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while (cursor < len && matching[0] >= 0)
{
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for (i = m = 0; i < psyc_routingVarsNum; i++)
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{
if (matching[i] < 0)
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break; // reached the end of possible matches
if (psyc_routingVars[matching[i]].ptr[cursor] == name[cursor])
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matching[m++] = matching[i]; // found a match, update matching indexes
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else if (psyc_routingVars[matching[i]].ptr[cursor] > name[cursor])
break; // passed the possible matches in alphabetical order in the array
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}
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if (m < psyc_routingVarsNum)
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matching[m] = -1; // mark the end of matching indexes
cursor++;
}
return matching[0] >= 0 ? PSYC_TRUE : PSYC_FALSE;
}
/**
* Get the type of variable name.
*/
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psycType psyc_getVarType(const char *name, size_t len)
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{
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//return psyc_matchArray(psyc_varTypes, PSYC_NUM_ELEM(psyc_varTypes), name, len, 1);
size_t cursor = 1;
uint8_t i, m = 0;
int8_t matching[psyc_varTypesNum]; // indexes of matching vars
if (len < 2 || name[0] != '_')
return 0;
// first find the vars with matching length
for (i=0; i<psyc_varTypesNum; i++)
if (len == psyc_varTypes[i].name.length || (len > psyc_varTypes[i].name.length && name[psyc_varTypes[i].name.length] == '_'))
matching[m++] = i;
matching[m] = -1; // mark the end of matching indexes
while (cursor < len && matching[0] >= 0)
{
for (i = m = 0; i < psyc_varTypesNum; i++)
{
if (matching[i] < 0)
break; // reached the end of possible matches
if (cursor < psyc_varTypes[matching[i]].name.length && psyc_varTypes[matching[i]].name.ptr[cursor] == name[cursor])
matching[m++] = matching[i]; // found a match, update matching indexes
else if (cursor == psyc_varTypes[matching[i]].name.length && name[cursor] == '_')
return psyc_varTypes[matching[0]].value; // _ after the end of a matching prefix
else if (psyc_varTypes[matching[i]].name.ptr[cursor] > name[cursor])
break; // passed the possible matches in alphabetical order in the array
}
if (m < psyc_varTypesNum)
matching[m] = -1; // mark the end of matching indexes
cursor++;
}
// return first match if found
return matching[0] >= 0 ? psyc_varTypes[matching[0]].value : 0;
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}